ruby on rails 4 -- bundle install grape-jbuilder - ruby-on-rails

Question

After I installed gem grape-jbuilder
and run bundle exec rails s it showed this message
bin/rails:6: warning: already initialized constant APP_PATH
/Users/xxx/xxx/bin/rails:6: warning: previous definition of APP_PATH was
here
Usage: rails COMMAND [ARGS]
The most common rails commands are:
generate Generate new code (short-cut alias: "g")
console Start the Rails console (short-cut alias: "c")
server Start the Rails server (short-cut alias: "s")
dbconsole Start a console for the database specified in config/database.yml
(short-cut alias: "db")
new Create a new Rails application. "rails new my_app" creates a
new application called MyApp in "./my_app"
In addition to those, there are:
destroy Undo code generated with "generate" (short-cut alias: "d")
plugin new Generates skeleton for developing a Rails plugin
runner Run a piece of code in the application environment (short-cut alias: "r")
All commands can be run with -h (or --help) for more information.
And when I run bundle exec rake rails:update:bin
It show the error message below
rake aborted!
LoadError: cannot load such file -- hashie/hash
/Users/xxx/xxx/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:in require'
/Users/xxx/xxx/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:inblock in require'
/Users/xxx/xxx/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:240:in load_dependency'
/Users/xxx/xxx/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.4/lib/active_support/dependencies.rb:274:inrequire'
/Users/xxx/xxx/vendor/bundle/ruby/2.3.0/gems/grape-jbuilder-0.2.0/lib/grape/jbuilder.rb:2:in <top (required)>'
/Users/xxx/xxx/config/application.rb:7:in'
/Users/xxx/xxx/Rakefile:4:in require'
/Users/xxx/xxx/Rakefile:4:in'
/Users/xxx/xxx/vendor/bundle/ruby/2.3.0/gems/rake-11.3.0/exe/rake:27:in <top (required)>'
/Users/xxx/.rbenv/versions/2.3.1/bin/bundle:23:inload'
/Users/xxx/.rbenv/versions/2.3.1/bin/bundle:23:in <main>'
LoadError: cannot load such file -- grape-jbuilder
/Users/xxx/xxx/config/application.rb:7:in'
/Users/xxx/xxx/Rakefile:4:in require'
/Users/xxx/xxx/Rakefile:4:in'
/Users/xxx/xxx/vendor/bundle/ruby/2.3.0/gems/rake-11.3.0/exe/rake:27:in <top (required)>'
/Users/xxx/.rbenv/versions/2.3.1/bin/bundle:23:inload'
/Users/jiaping/.rbenv/versions/2.3.1/bin/bundle:23:in `'
(See full trace by running task with --trace)
Gemfile
gem 'rails', '4.2.4'
gem 'rack-contrib'
gem 'sdoc', '~> 0.4.0', group: :doc
gem 'therubyracer'
gem 'rb-readline'
gem 'jquery-rails'
gem 'jquery-ui-rails'
gem 'bootstrap-sass'
gem 'font-awesome-rails'
gem 'react-rails'
gem 'coffee-rails', '~> 4.1.0'
gem 'uglifier', '>= 1.3.0'
gem 'sass-rails'
gem 'momentjs-rails'
gem 'bootstrap3-datetimepicker-rails'
gem 'jquery-payment-rails', git: 'https://github.com/thoughtbot/jquery-payment-rails.git'
gem 'page_title_helper'
gem 'sprockets-es6', require: 'sprockets/es6'
gem 'jbuilder', '~> 2.0'
gem 'sorcery'
gem 'oauth2', '~> 1.3.0'
gem 'bcrypt'
gem 'dotenv-rails'
gem 'config', '~> 1.0.0'
gem 'enum_help'
gem 'mysql2', '~> 0.3.18'
gem 'squeel'
gem 'seed-fu'
gem 'carrierwave'
gem 'carrierwave-data-uri'
gem 'carrierwave-aws'
gem 'rmagick'
gem 'acts_as_list'
gem 'kaminari'
gem 'ransack'
gem 'rails-jquery-autocomplete'
gem 'gretel'
gem 'email_validator'
gem 'icalendar'
gem 'bootstrap_form'
gem 'paranoia', '~> 2.0'
gem 'unicorn'
gem 'unicorn-rails'
gem 'unicorn-worker-killer'
gem 'google-analytics-rails'
gem 'meta-tags'
gem 'web-console', '~> 2.0', group: :development
gem 'adminlte2-rails'
gem 'geocoder'
gem 'validates_timeliness', '~> 4.0'
gem 'stripe', :git => 'https://github.com/stripe/stripe-ruby'
gem 'whenever', require: false
gem 'holiday_jp'
gem 'exception_notification', github: 'smartinez87/exception_notification'
gem 'slack-notifier'
gem 'grape'
gem 'grape-jbuilder'
group :staging do
gem 'letter_opener_web'
end
group :development, :test do
gem 'letter_opener'
gem 'spring'
gem 'spring-commands-rspec'
gem 'rspec-rails'
gem 'factory_girl_rails'
gem 'simplecov', require: false
gem 'rubocop'
gem 'byebug'
gem 'better_errors'
gem 'pry'
gem 'pry-byebug'
gem 'pry-doc'
gem 'pry-rails'
gem 'pry-stack_explorer'
gem 'quiet_assets'
gem 'awesome_print'
gem 'annotate'
gem 'migration_comments'
gem 'capistrano', '~> 3.4.0'
gem 'capistrano-rails'
gem 'capistrano-rbenv'
gem 'capistrano-bundler'
gem 'capistrano3-unicorn'
gem 'rails-admin-scaffold'
end
group :test do
gem 'capybara'
gem 'database_cleaner'
gem 'faker'
gem 'fuubar'
gem 'launchy'
gem 'selenium-webdriver'
gem 'shoulda-matchers'
gem 'timecop'
end
How can I solve this problem?

Answer 1

From here:
Actually it's spring which cause this issue. Try to comment it in the
Gemfile, then bundle install and restart the server ; shutting it
down, the warning is not present anymore.