Devise & Heroku Error - ruby-on-rails

Question

I'm trying to make devise work on Heroku. It works fine on my computer but when I push my code on Heroku, I get this error each time I try to create a user : `We're sorry, but something went wrong.
If you are the application owner check the logs for more information.`. I checked the log aand there is no error. Here they are :
2014-09-13T06:28:11.400635+00:00 heroku[router]: at=info method=GET path="/users/" host=birdl-dev.herokuapp.com request_id=0216598c-e1f8-465f-a68b-b7e648df5309 fwd="24.50.121.235" dyno=web.1 connect=1ms service=219ms status=200 bytes=945
2014-09-13T06:28:15.654213+00:00 heroku[router]: at=info method=GET path="/" host=birdl-dev.herokuapp.com request_id=f1e788f3-ae69-4eb4-a64f-f81a3b8c528e fwd="24.50.121.235" dyno=web.1 connect=1ms service=9ms status=304 bytes=964
2014-09-13T06:28:15.770802+00:00 heroku[router]: at=info method=GET path="/assets/application-cb25950d0e442f07f1fa7be553c321c3.css" host=birdl-dev.herokuapp.com request_id=0f40d69d-bfe7-4de1-aa1c-8ec251710b1e fwd="24.50.121.235" dyno=web.1 connect=0ms service=7ms status=404 bytes=954
2014-09-13T06:28:15.776790+00:00 heroku[router]: at=info method=GET path="/assets/application-433aac58cfba85b04e81533418015cc6.js" host=birdl-dev.herokuapp.com request_id=6d5e0aca-1692-4029-9c46-76e3c1298fae fwd="24.50.121.235" dyno=web.1 connect=1ms service=8ms status=404 bytes=938
2014-09-13T06:28:20.043253+00:00 heroku[router]: at=info method=GET path="/users/sign_in" host=birdl-dev.herokuapp.com request_id=93b3a4fb-0526-4497-a05c-6921d5c3dd14 fwd="24.50.121.235" dyno=web.1 connect=4ms service=68ms status=304 bytes=977
2014-09-13T06:28:20.164359+00:00 heroku[router]: at=info method=GET path="/assets/application-cb25950d0e442f07f1fa7be553c321c3.css" host=birdl-dev.herokuapp.com request_id=2885dbd7-2122-4fd7-993b-476d1b8cac8c fwd="24.50.121.235" dyno=web.1 connect=1ms service=8ms status=404 bytes=967
2014-09-13T06:28:20.162472+00:00 heroku[router]: at=info method=GET path="/assets/application-433aac58cfba85b04e81533418015cc6.js" host=birdl-dev.herokuapp.com request_id=d56a36a7-ae71-4d43-ae85-be6849818767 fwd="24.50.121.235" dyno=web.1 connect=0ms service=9ms status=404 bytes=951
2014-09-13T06:28:24.725755+00:00 heroku[router]: at=info method=GET path="/assets/application-433aac58cfba85b04e81533418015cc6.js" host=birdl-dev.herokuapp.com request_id=f4798f12-b3e4-4be4-8ea7-b461fafe6eb8 fwd="24.50.121.235" dyno=web.1 connect=2ms service=13ms status=404 bytes=951
2014-09-13T06:28:24.589217+00:00 heroku[router]: at=info method=GET path="/users/sign_up" host=birdl-dev.herokuapp.com request_id=cb92257d-c1c3-4cc5-a111-b5b1eb90e0e3 fwd="24.50.121.235" dyno=web.1 connect=0ms service=18ms status=304 bytes=1032
2014-09-13T06:28:24.713540+00:00 heroku[router]: at=info method=GET path="/assets/application-cb25950d0e442f07f1fa7be553c321c3.css" host=birdl-dev.herokuapp.com request_id=7768d23a-c34e-4dff-a8ea-c4a2cd3caf29 fwd="24.50.121.235" dyno=web.1 connect=0ms service=9ms status=404 bytes=967
2014-09-13T06:28:34.201030+00:00 heroku[router]: at=info method=POST path="/users" host=birdl-dev.herokuapp.com request_id=c1e7ab4c-68dd-433e-8f26-870c2392ab3e fwd="24.50.121.235" dyno=web.1 connect=1ms service=772ms status=500 bytes=1335
2014-09-13T06:28:39.163670+00:00 heroku[router]: at=info method=GET path="/users" host=birdl-dev.herokuapp.com request_id=64aa0964-4b0a-476a-9a12-eb6fcd5b5fa3 fwd="24.50.121.235" dyno=web.1 connect=0ms service=15ms status=200 bytes=944
2014-09-13T06:28:39.303286+00:00 heroku[router]: at=info method=GET path="/assets/application-cb25950d0e442f07f1fa7be553c321c3.css" host=birdl-dev.herokuapp.com request_id=6704909e-f077-4a92-af68-5fa63939023e fwd="24.50.121.235" dyno=web.1 connect=1ms service=11ms status=404 bytes=985
2014-09-13T06:28:39.315308+00:00 heroku[router]: at=info method=GET path="/assets/application-433aac58cfba85b04e81533418015cc6.js" host=birdl-dev.herokuapp.com request_id=98a0ab32-b80e-4cda-8fc6-1e3877f25a75 fwd="24.50.121.235" dyno=web.1 connect=1ms service=23ms status=404 bytes=969
2014-09-13T06:29:05.437893+00:00 heroku[router]: at=info method=GET path="/" host=birdl-dev.herokuapp.com request_id=93d4b29e-73c0-43ff-97a8-64c864926af5 fwd="54.89.230.255" dyno=web.1 connect=1ms service=13ms status=200 bytes=396
development.rb
Rails.application.configure do
# Settings specified here will take precedence over those in config/application.rb.
# In the development environment your application's code is reloaded on
# every request. This slows down response time but is perfect for development
# since you don't have to restart the web server when you make code changes.
config.cache_classes = false
# Do not eager load code on boot.
config.eager_load = false
# Show full error reports and disable caching.
config.consider_all_requests_local = true
config.action_controller.perform_caching = false
config.action_mailer.delivery_method = :sendmail
config.action_mailer.perform_deliveries = true
config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }
# Don't care if the mailer can't send.
config.action_mailer.raise_delivery_errors = false
# Print deprecation notices to the Rails logger.
config.active_support.deprecation = :log
# Raise an error on page load if there are pending migrations.
config.active_record.migration_error = :page_load
# Debug mode disables concatenation and preprocessing of assets.
# This option may cause significant delays in view rendering with a large
# number of complex assets.
config.assets.debug = true
# Adds additional error checking when serving assets at runtime.
# Checks for improperly declared sprockets dependencies.
# Raises helpful error messages.
config.assets.raise_runtime_errors = true
# Raises error for missing translations
# config.action_view.raise_on_missing_translations = true
end
production.rb
Rails.application.configure do
# Settings specified here will take precedence over those in config/application.rb.
# Code is not reloaded between requests.
config.cache_classes = true
# Eager load code on boot. This eager loads most of Rails and
# your application in memory, allowing both threaded web servers
# and those relying on copy on write to perform better.
# Rake tasks automatically ignore this option for performance.
config.eager_load = true
# Full error reports are disabled and caching is turned on.
config.consider_all_requests_local = false
config.action_controller.perform_caching = true
# Enable Rack::Cache to put a simple HTTP cache in front of your application
# Add `rack-cache` to your Gemfile before enabling this.
# For large-scale production use, consider using a caching reverse proxy like nginx, varnish or squid.
# config.action_dispatch.rack_cache = true
# Disable Rails's static asset server (Apache or nginx will already do this).
config.serve_static_assets = false
# Compress JavaScripts and CSS.
config.assets.js_compressor = :uglifier
# config.assets.css_compressor = :sass
# Do not fallback to assets pipeline if a precompiled asset is missed.
config.assets.compile = false
# Generate digests for assets URLs.
config.assets.digest = true
# `config.assets.precompile` and `config.assets.version` have moved to config/initializers/assets.rb
# Specifies the header that your server uses for sending files.
# config.action_dispatch.x_sendfile_header = "X-Sendfile" # for apache
# config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for nginx
# Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
# config.force_ssl = true
# Set to :debug to see everything in the log.
config.log_level = :info
# Prepend all log lines with the following tags.
# config.log_tags = [ :subdomain, :uuid ]
# Use a different logger for distributed setups.
# config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new)
# Use a different cache store in production.
# config.cache_store = :mem_cache_store
# Enable serving of images, stylesheets, and JavaScripts from an asset server.
# config.action_controller.asset_host = "http://assets.example.com"
# Ignore bad email addresses and do not raise email delivery errors.
# Set this to true and configure the email server for immediate delivery to raise delivery errors.
# config.action_mailer.raise_delivery_errors = false
# Enable locale fallbacks for I18n (makes lookups for any locale fall back to
# the I18n.default_locale when a translation cannot be found).
config.i18n.fallbacks = true
# Send deprecation notices to registered listeners.
config.active_support.deprecation = :notify
# Disable automatic flushing of the log to improve performance.
# config.autoflush_log = false
# Use default logging formatter so that PID and timestamp are not suppressed.
config.log_formatter = ::Logger::Formatter.new
# Do not dump schema after migrations.
config.active_record.dump_schema_after_migration = false
end
Any guess ?

Answer 1

DB
Any guess?
I would imagine the error to be that you haven't migrated your database on Heroku.
It's a common problem to presume your development environment is "just" your Rails application -- it's more than that. You have to make sure your production database is populated with the same data that you have in your Rails DB, too
I would ensure you have done this:
$ heroku run rake db:migrate
--
Debug
A sneaky trick to "debug" on Heroku is to actually make your app run in "development" mode. Although you must ensure you switch it back to running in production mode afterwards, if you do the following, it will show you what the error is properly:
#config/environments/production.rb
config.consider_all_requests_local = true # false
Change this, re-push to Heroku & then you'll be able to see the verbose version of the error on screen. I presume it will say you don't have the correct columns in your database ;)

Answer 2

Also, don't forget to set config.action_mailer.default_url_options in config/environments/production.rb and set up a mailer. Or, set config.action_mailer.perform_deliveries = false if you're not ready to set up a mailer yet.

Answer 3

This line in the log
2014-09-13T06:28:34.201030+00:00 heroku[router]: at=info method=POST path="/users" host=birdl-dev.herokuapp.com request_id=c1e7ab4c-68dd-433e-8f26-870c2392ab3e fwd="24.50.121.235" dyno=web.1 connect=1ms service=772ms status=500 bytes=1335
is telling you that an exception is happening when you create the user. Try setting in your production.rb
config.log_level = :debug
and restart the server to see the exception backtrace in the log.