Heroku build failed - ruby-on-rails

I have a Rails 5 app and I'm trying to deploy it for the first time on Heroku. It gives me the following log, not sure where is the issue.
I, [2017-01-16T12:43:13.155285 #3787] INFO -- : Writing /tmp/build_14044c73ce6e495d61ab25d40db08259/public/assets/admin/pages/media/works/img6-d846d51b577b94b6f4ec648085738337926f2d75510b067f6bf76bcc87644a80.jpg
rake aborted!
Sass::SyntaxError: Undefined mixin 'theme'.
/tmp/build_14044c73ce6e495d61ab25d40db08259/app/assets/stylesheets/admin/global/plugins/jquery-notific8/_themes.scss:12:in `theme'
/tmp/build_14044c73ce6e495d61ab25d40db08259/app/assets/stylesheets/admin/global/plugins/jquery-notific8/_themes.scss:12
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:351:in `block in visit_mixin'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/stack.rb:98:in `block in with_mixin'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/stack.rb:115:in `with_frame'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/stack.rb:98:in `with_mixin'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:349:in `visit_mixin'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/base.rb:36:in `visit'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:160:in `block in visit'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/stack.rb:79:in `block in with_base'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/stack.rb:115:in `with_frame'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/stack.rb:79:in `with_base'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:160:in `visit'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/base.rb:52:in `block in visit_children'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/base.rb:52:in `map'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/base.rb:52:in `visit_children'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:169:in `block in visit_children'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:181:in `with_environment'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:168:in `visit_children'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/base.rb:36:in `block in visit'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:188:in `visit_root'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/base.rb:36:in `visit'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:159:in `visit'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:8:in `visit'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/root_node.rb:36:in `css_tree'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/tree/root_node.rb:20:in `render'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sass-3.4.23/lib/sass/engine.rb:281:in `render'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/compass-rails-3.0.2/lib/compass-rails/patches/sass_importer.rb:48:in `evaluate'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/tilt-2.0.5/lib/tilt/template.rb:102:in `render'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy_tilt_processor.rb:25:in `call'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:75:in `call_processor'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `call_processors'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:60:in `block in load'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:44:in `load'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:47:in `load'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/bundle.rb:23:in `block in call'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/utils.rb:200:in `dfs'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/bundle.rb:24:in `call'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:75:in `call_processor'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `call_processors'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:60:in `block in load'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:44:in `load'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:47:in `load'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/base.rb:66:in `find_asset'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/base.rb:73:in `find_all_linked_assets'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:142:in `block in find'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:114:in `block (2 levels) in logical_paths'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:228:in `block in stat_tree'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:212:in `block in stat_directory'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `each'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `stat_directory'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:227:in `stat_tree'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:105:in `each'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:105:in `block in logical_paths'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:104:in `each'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:104:in `logical_paths'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:140:in `find'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:185:in `compile'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:68:in `block (3 levels) in define'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-3.7.1/lib/rake/sprocketstask.rb:147:in `with_logger'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:67:in `block (2 levels) in define'
/tmp/build_14044c73ce6e495d61ab25d40db08259/vendor/bundle/ruby/2.3.0/gems/rake-12.0.0/exe/rake:27:in `<top (required)>'
Tasks: TOP => assets:precompile
(See full trace by running task with --trace)
!
! Precompiling assets failed.
!
! Push rejected, failed to compile Ruby app.
! Push failed
Can you please help me fix it? I tried finiding 'theme' but didn't understand where to look.
How can I identify and fix this issue?
Here is the content of app/assets/stylesheets/admin/global/plugins/jquery-notific8/_themes.scss
/**
* #author Will Steinmetz
*
* Themes for the notific8 plug-in for jQuery
*
* Copyright (c)2013, Will Steinmetz
* Licensed under the BSD license.
* http://opensource.org/licenses/BSD-3-Clause
*/
#include theme(teal, #09c, #069);
#include theme(amethyst, #915faa, #5D2D77);
#include theme(ruby, #d10, #a10);
#include theme(tangerine, #ffb23f, #e88f00);
#include theme(lemon, #ffde00, #ffcc00, #ffde00, #333);
#include theme(lime, #38d315, #32b512);
#include theme(ebony, #666, #121212);
#include theme(smoke, #ababab, #efefef, #ababab, #333, #fff);

Related

Capistrano deployment failing on assets:precompile

I have been using capistrano 3 for my rails app for sometime. Today it started failing at assets precompilation step with the following on logs that aren't very helpful:
On the server I have
node 10.12.0
yarn 1.10.1
rails 5.1.6
ruby 2.5.1
rbenv 1.1.1
Caused by:
PrecompileRequired: PrecompileRequired
Caused by:
SSHKit::Command::Failed: ls exit status: 2
ls stdout: ls: cannot access '/var/www/bubblin.io/releases/20181020142819/assets_manifest_backup': No such file or directory
ls stderr: Nothing written
Tasks: TOP => deploy:assets:precompile
(See full trace by running task with --trace)
The deploy has failed with an error: Exception while executing as marvin#bubblin.io: rake exit status: 1
rake stdout: Yarn executable was not detected in the system.
Download Yarn at https://yarnpkg.com/en/docs/install
rake aborted!
Autoprefixer doesn’t support Node v5.4.1. Update it.
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/autoprefixer-rails-9.2.1/lib/autoprefixer-rails/processor.rb:163:in `runtime'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/autoprefixer-rails-9.2.1/lib/autoprefixer-rails/processor.rb:37:in `process'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/autoprefixer-rails-9.2.1/lib/autoprefixer-rails/sprockets.rb:20:in `run'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/autoprefixer-rails-9.2.1/lib/autoprefixer-rails/sprockets.rb:14:in `call'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:75:in `call_processor'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:in `call_processors'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:60:in `block in load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:44:in `load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:47:in `load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/bundle.rb:23:in `block in call'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/utils.rb:200:in `dfs'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/bundle.rb:24:in `call'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:75:in `call_processor'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:in `call_processors'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:60:in `block in load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:44:in `load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:47:in `load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/context.rb:99:in `load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/context.rb:129:in `depend_on_asset'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/context.rb:160:in `link_asset'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-rails-3.2.1/lib/sprockets/rails/context.rb:27:in `compute_asset_path'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/actionview-5.1.6/lib/action_view/helpers/asset_url_helper.rb:198:in `asset_path'
/var/www/bubblin.io/releases/20181020145802/app/assets/javascripts/serviceworkers/sw.js.erb:60:in `_evaluate_template'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/erb_processor.rb:26:in `call'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/erb_processor.rb:13:in `call'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:75:in `call_processor'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:in `call_processors'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:60:in `block in load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:44:in `load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:47:in `load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/bundle.rb:23:in `block in call'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/utils.rb:200:in `dfs'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/bundle.rb:24:in `call'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:75:in `call_processor'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/processor_utils.rb:56:in `call_processors'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:60:in `block in load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:44:in `load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:47:in `load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/base.rb:66:in `find_asset'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/base.rb:73:in `find_all_linked_assets'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:134:in `block in find'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:133:in `each'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:133:in `find'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:186:in `compile'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-rails-3.2.1/lib/sprockets/rails/task.rb:68:in `block (3 levels) in define'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/rake/sprocketstask.rb:147:in `with_logger'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-rails-3.2.1/lib/sprockets/rails/task.rb:67:in `block (2 levels) in define'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/rake-12.3.1/exe/rake:27:in `<top (required)>'
/home/marvin/.rbenv/versions/2.5.1/bin/bundle:23:in `load'
/home/marvin/.rbenv/versions/2.5.1/bin/bundle:23:in `<main>'
Tasks: TOP => assets:precompile
(See full trace by running task with --trace)
rake stderr: Nothing written
** DEPLOY FAILED
** Refer to log/capistrano.log for details. Here are the last 20 lines:
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:60:in `block in load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/loader.rb:44:in `load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/cached_environment.rb:47:in `load'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/base.rb:66:in `find_asset'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/base.rb:73:in `find_all_linked_assets'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:134:in `block in find'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:133:in `each'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:133:in `find'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/sprockets/manifest.rb:186:in `compile'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-rails-3.2.1/lib/sprockets/rails/task.rb:68:in `block (3 levels) in define'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-3.7.2/lib/rake/sprocketstask.rb:147:in `with_logger'
/var/www/bubblin.io/shared/bundle/ruby/2.5.0/gems/sprockets-rails-3.2.1/lib/sprockets/rails/task.rb:67:in `block (2 levels) in define'
/var/w
DEBUG [709144dc] ww/bubblin.io/shared/bundle/ruby/2.5.0/gems/rake-12.3.1/exe/rake:27:in `<top (required)>'
/home/marvin/.rbenv/versions/2.5.1/bin/bundle:23:in `load'
/home/marvin/.rbenv/versions/2.5.1/bin/bundle:23:in `<main>'
Tasks: TOP => assets:precompile
(See full trace by running task with --trace)
Edit: My yarn.lock file looks like so:
# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
# yarn lockfile v1
Actually, I don't use yarn for anything--was putting up with it because Rails decided to use it by default. I'll be happy we can remove it forever and have the error above be gone with it.
Looks like you don't have yarn installed in your deployment server. Did you already installed it? If not, try this command before a new deploy:
npm install yarn -g

Rails NoMethodError on Assets Precompile when using asset-url in .scss

I've been pulling my hair out on this one, I'm using x2 background-image in my .scss files and calling those images from /assets/images but when I try to precompile in my server (production) it returns a rake aborted!
root#X:/home/rails/rails_project# RAILS_ENV=production rake assets:precompile
DEPRECATION WARNING: Sprockets method `register_engine` is deprecated.
Please register a mime type using `register_mime_type` then
use `register_compressor` or `register_transformer`.
https://github.com/rails/sprockets/blob/master/guides/extending_sprockets.md#supporting-all-versions-of-sprockets-in-processors
(called from block in <class:Railtie> at /usr/local/rvm/gems/ruby-2.2.1/gems/less-rails-2.8.0/lib/less/rails/railtie.rb:16)
DEPRECATION WARNING: You are using the a deprecated processor interface Less::Rails::ImportProcessor.
Please update your processor interface:
https://github.com/rails/sprockets/blob/master/guides/extending_sprockets.md#supporting-all-versions-of-sprockets-in-processors
(called from block in <class:Railtie> at /usr/local/rvm/gems/ruby-2.2.1/gems/less-rails-2.8.0/lib/less/rails/railtie.rb:21)
rake aborted!
NoMethodError: undefined method `[]' for nil:NilClass
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/sass_processor.rb:278:in `sprockets_context'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/sass_processor.rb:124:in `asset_path'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/sass_processor.rb:137:in `asset_url'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/script/tree/funcall.rb:143:in `_perform'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/script/tree/node.rb:58:in `perform'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:397:in `visit_prop'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/base.rb:36:in `visit'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:160:in `block in visit'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/stack.rb:79:in `block in with_base'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/stack.rb:115:in `with_frame'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/stack.rb:79:in `with_base'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:160:in `visit'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:433:in `block (2 levels) in visit_rule'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:433:in `map'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:433:in `block in visit_rule'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:181:in `with_environment'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:431:in `visit_rule'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/base.rb:36:in `visit'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:160:in `block in visit'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/stack.rb:79:in `block in with_base'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/stack.rb:115:in `with_frame'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/stack.rb:79:in `with_base'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:160:in `visit'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/base.rb:52:in `block in visit_children'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/base.rb:52:in `map'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/base.rb:52:in `visit_children'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:169:in `block in visit_children'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:181:in `with_environment'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:168:in `visit_children'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/base.rb:36:in `block in visit'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:188:in `visit_root'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/base.rb:36:in `visit'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:159:in `visit'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/visitors/perform.rb:8:in `visit'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/root_node.rb:36:in `css_tree'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/tree/root_node.rb:20:in `render'
/usr/local/rvm/gems/ruby-2.2.1/gems/sass-3.4.23/lib/sass/engine.rb:281:in `render'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/sass_compressor.rb:48:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/sass_compressor.rb:28:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:75:in `call_processor'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `call_processors'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/loader.rb:60:in `block in load'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/loader.rb:44:in `load'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:47:in `yield'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:47:in `load'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/base.rb:66:in `find_asset'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/base.rb:73:in `find_all_linked_assets'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:142:in `block in find'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:114:in `block (2 levels) in logical_paths'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:228:in `block in stat_tree'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:212:in `block in stat_directory'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `each'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `stat_directory'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:227:in `stat_tree'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:105:in `each'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:105:in `block in logical_paths'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:104:in `each'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:104:in `logical_paths'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:140:in `find'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:185:in `compile'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:68:in `block (3 levels) in define'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-3.7.1/lib/rake/sprocketstask.rb:147:in `with_logger'
/usr/local/rvm/gems/ruby-2.2.1/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:67:in `block (2 levels) in define'
/usr/local/rvm/gems/ruby-2.2.1/gems/rake-12.0.0/exe/rake:27:in `<top (required)>'
/usr/local/rvm/gems/ruby-2.2.1/bin/ruby_executable_hooks:15:in `eval'
/usr/local/rvm/gems/ruby-2.2.1/bin/ruby_executable_hooks:15:in `<main>'
Tasks: TOP => assets:precompile
(See full trace by running task with --trace)
I fixed this by changing background-image: x.jpg; to background-image: url(image_path("x.jpg")); What happened was that it would not precompile the image because it couldn't find it until I added image_path to tell rails to look for it in assets.

Rake assets:precompile failed with a Sass syntax error

This seems to be a very awkward error. There are a lots of problems with rake asset:precompile but i didn't find nothing similar to this issue having Sass syntax error.I dont know what file this error occurs.
i'm using rails 5.
root#006230dae323:~/myhomerails# rake assets:precompile --trace RAILS_ENV=production
** Invoke assets:precompile (first_time)
** Invoke assets:environment (first_time)
** Execute assets:environment
** Invoke environment (first_time)
** Execute environment
** Execute assets:precompile
rake aborted!
Sass::SyntaxError: Invalid CSS after " color: ": expected expression (e.g. 1px, bold), was ";"
(sass):13586
this is the rest of the log:
rake aborted!
Sass::SyntaxError: Invalid CSS after " color: ": expected expression (e.g. 1px, bold), was ";"
(sass):13586
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:1189:in `expected'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/script/lexer.rb:229:in `expected!'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/script/parser.rb:704:in `assert_expr'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/script/parser.rb:75:in `parse'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:1051:in `sass_script'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:897:in `value!'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:769:in `block in try_declaration'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:1165:in `call'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:1165:in `rethrow'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:782:in `try_declaration'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:711:in `declaration_or_ruleset'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:676:in `block_child'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:665:in `block_contents'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:657:in `block'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:649:in `ruleset'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:675:in `block_child'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:668:in `block_contents'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:125:in `stylesheet'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/scss/parser.rb:41:in `parse'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/engine.rb:406:in `_to_tree'
/usr/local/bundle/gems/sass-3.4.22/lib/sass/engine.rb:281:in `render'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/sass_compressor.rb:48:in `call'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/sass_compressor.rb:28:in `call'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:75:in `call_processor'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:56:in `call_processors'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/loader.rb:60:in `block in load'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/loader.rb:44:in `load'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/cached_environment.rb:47:in `yield'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/cached_environment.rb:47:in `load'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/base.rb:66:in `find_asset'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/base.rb:73:in `find_all_linked_assets'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/manifest.rb:142:in `block in find'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:114:in `block (2 levels) in logical_paths'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:228:in `block in stat_tree'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:212:in `block in stat_directory'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:209:in `each'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:209:in `stat_directory'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:227:in `stat_tree'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:105:in `each'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:105:in `block in logical_paths'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:104:in `each'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:104:in `logical_paths'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/manifest.rb:140:in `find'
/usr/local/bundle/gems/sprockets-3.7.0/lib/sprockets/manifest.rb:185:in `compile'
/usr/local/bundle/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:68:in `block (3 levels) in define'
/usr/local/bundle/gems/sprockets-3.7.0/lib/rake/sprocketstask.rb:147:in `with_logger'
/usr/local/bundle/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:67:in `block (2 levels) in define'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/task.rb:248:in `call'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/task.rb:248:in `block in execute'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/task.rb:243:in `each'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/task.rb:243:in `execute'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/task.rb:187:in `block in invoke_with_call_chain'
/usr/local/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/task.rb:180:in `invoke_with_call_chain'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/task.rb:173:in `invoke'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/application.rb:152:in `invoke_task'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/application.rb:108:in `block (2 levels) in top_level'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/application.rb:108:in `each'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/application.rb:108:in `block in top_level'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/application.rb:117:in `run_with_threads'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/application.rb:102:in `top_level'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/application.rb:80:in `block in run'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/application.rb:178:in `standard_exception_handling'
/usr/local/bundle/gems/rake-11.3.0/lib/rake/application.rb:77:in `run'
/usr/local/bundle/gems/rake-11.3.0/exe/rake:27:in `<top (required)>'
/usr/local/bundle/bin/rake:17:in `load'
/usr/local/bundle/bin/rake:17:in `<main>'
Tasks: TOP => assets:precompile

rake aborted! NoMethodError: undefined method `[]' for nil:NilClass (rails5+heroku)

I'm trying to compile my assets locally so i can make sure there is no issues when pushing to heroku. Locally my view looks perfect, but on heroku its not loading all my assets. When I run RAILS_ENV=production bundle exec rake assets:precompile
I get the below error, any ideas?
rake aborted!
NoMethodError: undefined method `[]' for nil:NilClass
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/sass_processor.rb:278:in `sprockets_context'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/sass_processor.rb:124:in `asset_path'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/sass_processor.rb:137:in `asset_url'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/sass_processor.rb:209:in `font_url'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/script/tree/funcall.rb:143:in `_perform'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/script/tree/node.rb:58:in `perform'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:397:in `visit_prop'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:36:in `visit'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:160:in `block in visit'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/stack.rb:79:in `block in with_base'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/stack.rb:115:in `with_frame'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/stack.rb:79:in `with_base'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:160:in `visit'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:504:in `block (2 levels) in visit_directive'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:504:in `map'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:504:in `block in visit_directive'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:181:in `with_environment'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:503:in `visit_directive'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:36:in `visit'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:160:in `block in visit'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/stack.rb:79:in `block in with_base'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/stack.rb:115:in `with_frame'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/stack.rb:79:in `with_base'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:160:in `visit'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:52:in `block in visit_children'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:52:in `map'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:52:in `visit_children'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:169:in `block in visit_children'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:181:in `with_environment'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:168:in `visit_children'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:36:in `block in visit'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:188:in `visit_root'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:36:in `visit'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:159:in `visit'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:8:in `visit'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/root_node.rb:36:in `css_tree'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/tree/root_node.rb:20:in `render'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sass-3.4.22/lib/sass/engine.rb:281:in `render'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/sass_compressor.rb:48:in `call'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/sass_compressor.rb:28:in `call'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:75:in `call_processor'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:56:in `call_processors'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/loader.rb:60:in `block in load'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/loader.rb:44:in `load'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/cached_environment.rb:47:in `load'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/base.rb:66:in `find_asset'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/base.rb:73:in `find_all_linked_assets'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/manifest.rb:142:in `block in find'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:114:in `block (2 levels) in logical_paths'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:228:in `block in stat_tree'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:212:in `block in stat_directory'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:209:in `each'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:209:in `stat_directory'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:227:in `stat_tree'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:105:in `each'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:105:in `block in logical_paths'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:104:in `each'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:104:in `logical_paths'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/manifest.rb:140:in `find'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/manifest.rb:185:in `compile'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-rails-3.1.1/lib/sprockets/rails/task.rb:68:in `block (3 levels) in define'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/rake/sprocketstask.rb:147:in `with_logger'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-rails-3.1.1/lib/sprockets/rails/task.rb:67:in `block (2 levels) in define'
/Users/admin/.rvm/gems/ruby-2.3.1#global/gems/rake-11.2.2/exe/rake:27:in `<top (required)>'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/bin/ruby_executable_hooks:15:in `eval'
/Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/bin/ruby_executable_hooks:15:in `<main>'
Tasks: TOP => assets:precompile
(See full trace by running task with --trace)
gem open sprockets -v 3.7.0 and add below three line
puts '#'*30
puts path
puts '#'*30
to /Users/admin/.rvm/gems/ruby-2.3.1#ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/sass_processor.rb:124
Then you will known which file lead the error, normally, it's due to missing a asset/image file or using function asset-url in css. (asset-url only available in scss)

Rails NoMethodError: undefined method `[]' for nil:NilClass Error while precomple for production

I 'm using trying to precompile assets for prduction using
RAILS_ENV=production rake assets:precompile --trace
but it gives me error
NoMethodError: undefined method `[]' for nil:NilClass
complete logs are
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/sass_processor.rb:278:in `sprockets_context'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/sass_processor.rb:124:in `asset_path'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/sass_processor.rb:200:in `font_path'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/script/tree/funcall.rb:140:in `_perform'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/script/tree/node.rb:50:in `perform'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/script/tree/funcall.rb:170:in `perform_arg'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/script/tree/funcall.rb:124:in `block in _perform'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/script/tree/funcall.rb:124:in `each'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/script/tree/funcall.rb:124:in `each_with_index'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/script/tree/funcall.rb:124:in `each'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/script/tree/funcall.rb:124:in `map'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/script/tree/funcall.rb:124:in `_perform'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/script/tree/node.rb:50:in `perform'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:395:in `visit_prop'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/base.rb:36:in `visit'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/stack.rb:79:in `block in with_base'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/stack.rb:115:in `with_frame'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/stack.rb:79:in `with_base'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:158:in `visit'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:502:in `block (2 levels) in visit_directive'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:502:in `map'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:502:in `block in visit_directive'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:501:in `visit_directive'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/base.rb:36:in `visit'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/stack.rb:79:in `block in with_base'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/stack.rb:115:in `with_frame'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/stack.rb:79:in `with_base'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:158:in `visit'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/base.rb:52:in `block in visit_children'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/base.rb:52:in `map'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/base.rb:52:in `visit_children'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:167:in `block in visit_children'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:166:in `visit_children'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/base.rb:36:in `block in visit'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:186:in `visit_root'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/base.rb:36:in `visit'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:157:in `visit'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/visitors/perform.rb:8:in `visit'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/root_node.rb:36:in `css_tree'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/tree/root_node.rb:20:in `render'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sass-3.4.21/lib/sass/engine.rb:278:in `render'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/sass_compressor.rb:48:in `call'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/sass_compressor.rb:28:in `call'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/processor_utils.rb:75:in `call_processor'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/processor_utils.rb:56:in `call_processors'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/loader.rb:60:in `block in load'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/loader.rb:318:in `fetch_asset_from_dependency_cache'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/loader.rb:44:in `load'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/cached_environment.rb:47:in `yield'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/cached_environment.rb:47:in `load'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/base.rb:66:in `find_asset'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/base.rb:73:in `find_all_linked_assets'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/manifest.rb:142:in `block in find'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/legacy.rb:114:in `block (2 levels) in logical_paths'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:225:in `block in stat_tree'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:209:in `block in stat_directory'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:206:in `each'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:206:in `stat_directory'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:224:in `stat_tree'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:228:in `block in stat_tree'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:209:in `block in stat_directory'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:206:in `each'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:206:in `stat_directory'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:224:in `stat_tree'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/legacy.rb:105:in `each'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/legacy.rb:105:in `block in logical_paths'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/legacy.rb:104:in `each'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/legacy.rb:104:in `logical_paths'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/manifest.rb:140:in `find'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/sprockets/manifest.rb:168:in `compile'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-rails-3.0.4/lib/sprockets/rails/task.rb:68:in `block (3 levels) in define'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-3.5.2/lib/rake/sprocketstask.rb:147:in `with_logger'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/sprockets-rails-3.0.4/lib/sprockets/rails/task.rb:67:in `block (2 levels) in define'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/task.rb:240:in `call'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/task.rb:240:in `block in execute'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/task.rb:235:in `each'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/task.rb:235:in `execute'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
/home/faisal/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/task.rb:172:in `invoke_with_call_chain'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/task.rb:165:in `invoke'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/application.rb:150:in `invoke_task'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/application.rb:106:in `block (2 levels) in top_level'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/application.rb:106:in `each'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/application.rb:106:in `block in top_level'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/application.rb:115:in `run_with_threads'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/application.rb:100:in `top_level'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/application.rb:78:in `block in run'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/application.rb:176:in `standard_exception_handling'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/lib/rake/application.rb:75:in `run'
/home/faisal/.rvm/gems/ruby-2.2.3/gems/rake-10.5.0/bin/rake:33:in `<top (required)>'
/home/faisal/.rvm/gems/ruby-2.2.3/bin/rake:23:in `load'
/home/faisal/.rvm/gems/ruby-2.2.3/bin/rake:23:in `<main>'
/home/faisal/.rvm/gems/ruby-2.2.3/bin/ruby_executable_hooks:15:in `eval'
/home/faisal/.rvm/gems/ruby-2.2.3/bin/ruby_executable_hooks:15:in `<main>'
Tasks: TOP => assets:precompile
I am trying to solve this from last 4 days
tried almost all the answer posted for similar questions.
I have even deleted all the .css and .js files except application.js/css, but result is same.
what might be the actual issue with it
but the result is still same

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