Heroku “à=code d'erreur=H10 desc=”Application s'est écrasé“ method=GET path=/favicon.ico”

J'ai une simple application Rails qui fonctionne très bien sur localhost (Mac OS X), mais quand je le déployer à Heroku je vois une page avec ce message d'erreur:

Erreur D'Application
Une erreur s'est produite dans l'application et que votre page n'a pas pu être servi. Veuillez réessayer dans quelques instants.
Si vous êtes le propriétaire de l'application, vérifier vos journaux pour plus de détails.

Je ne sais pas vraiment ce que je fais ici; je ne peux pas faire quelque sens que ce soit de la sortie de heroku logs:

2013-04-08T03:25:02+00:00 app[web.1]: => Booting WEBrick
2013-04-08T03:25:02+00:00 app[web.1]: => Rails 3.2.12 application starting in production on http://0.0.0.0:15072
2013-04-08T03:25:02+00:00 app[web.1]: => Call with -d to detach
2013-04-08T03:25:02+00:00 app[web.1]: => Ctrl-C to shutdown server
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:438:in `each'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:438:in `block in eager_load!'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:436:in `each'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:436:in `eager_load!'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/application/finisher.rb:53:in `block in <module:Finisher>'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:30:in `instance_exec'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/app/controllers/application_controller.rb:1:in `<top (required)>'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:439:in `block (2 levels) in eager_load!'
2013-04-08T03:25:02+00:00 app[web.1]: /app/app/controllers/application_controller.rb:3:in `<class:ApplicationController>': uninitialized constant ApplicationController::SessionsHelper (NameError)
2013-04-08T03:25:02+00:00 app[web.1]: Exiting
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:54:in `run_initializers'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/application.rb:136:in `initialize!'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/railtie/configurable.rb:30:in `method_missing'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/config/environment.rb:5:in `<top (required)>'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/config.ru:3:in `require'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:54:in `each'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/config.ru:3:in `block in <main>'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:30:in `run'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:55:in `block in run_initializers'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/config.ru:in `<main>'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:40:in `eval'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:40:in `parse_file'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:200:in `app'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/config.ru:in `new'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/commands/server.rb:46:in `app'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:304:in `wrapped_app'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:254:in `start'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/commands/server.rb:70:in `start'
2013-04-08T03:25:02+00
:00 app[web.1]:     from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/commands.rb:50:in `<top (required)>'
2013-04-08T03:25:02+00:00 app[web.1]:   from script/rails:6:in `require'
2013-04-08T03:25:02+00:00 app[web.1]:   from script/rails:6:in `<main>'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/commands.rb:55:in `block in <top (required)>'
2013-04-08T03:25:02+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/commands.rb:50:in `tap'
2013-04-08T03:25:03+00:00 heroku[web.1]: State changed from crashed to starting
2013-04-08T03:25:03+00:00 heroku[web.1]: State changed from starting to crashed
2013-04-08T03:25:03+00:00 heroku[web.1]: Process exited with status 1
2013-04-08T03:25:05+00:00 heroku[web.1]: Starting process with command `bundle exec rails server -p 7369`
2013-04-08T03:25:09+00:00 heroku[web.1]: State changed from crashed to starting
2013-04-08T03:25:09+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:5)
2013-04-08T03:25:09+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:5)
2013-04-08T03:25:11+00:00 app[web.1]: Exiting
2013-04-08T03:25:11+00:00 app[web.1]: /app/app/controllers/application_controller.rb:3:in `<class:ApplicationController>': uninitialized constant ApplicationController::SessionsHelper (NameError)
2013-04-08T03:25:11+00:00 app[web.1]: => Ctrl-C to shutdown server
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:439:in `block (2 levels) in eager_load!'
2013-04-08T03:25:11+00:00 app[web.1]: => Call with -d to detach
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/app/controllers/application_controller.rb:1:in `<top (required)>'
2013-04-08T03:25:11+00:00 app[web.1]: => Booting WEBrick
2013-04-08T03:25:11+00:00 app[web.1]: => Rails 3.2.12 application starting in production on http://0.0.0.0:7369
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:436:in `each'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:54:in `each'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:436:in `eager_load!'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:438:in `block in eager_load!'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:30:in `instance_exec'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/application/finisher.rb:53:in `block in <module:Finisher>'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:55:in `block in run_initializers'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/application.rb:136:in `initialize!'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:438:in `each'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/config.ru:in `new'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:30:in `run'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/railtie/configurable.rb:30:in `method_missing'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:40:in `eval'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:54:in `run_initializers'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/config/environment.rb:5:in `<top (required)>'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/config.ru:3:in `require'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/config.ru:3:in `block in <main>'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/commands/server.rb:46:in `app'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:254:in `start'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/config.ru:in `<main>'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:40:in `parse_file'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:200:in `app'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:304:in `wrapped_app'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/commands/server.rb:70:in `start'
2013-04-08T03:25:11+00:00 app[web.1]:   from script/rails:6:in `require'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/commands.rb:55:in `block in <top (required)>'
2013-04-08T03:25:11+00:00 app[web.1]:   from script/rails:6:in `<main>'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/commands.rb:50:in `tap'
2013-04-08T03:25:11+00:00 app[web.1]:   from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/commands.rb:50:in `<top (required)>'
2013-04-08T03:25:13+00:00 heroku[web.1]: Process exited with status 1
2013-04-08T03:25:13+00:00 heroku[web.1]: State changed from starting to crashed
2013-04-08T03:30:49+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/host=********.herokuapp.com fwd="115.79.161.252" dyno= connect= service= status=503 bytes=
2013-04-08T03:30:49+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/favicon.ico host=********.herokuapp.com fwd="115.79.161.252" dyno= connect= service= status=503 bytes=
2013-04-08T03:30:50+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/host=********.herokuapp.com fwd="115.79.161.252" dyno= connect= service= status=503 bytes=
2013-04-08T03:30:51+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/favicon.ico host=********.herokuapp.com fwd="115.79.161.252" dyno= connect= service= status=503 bytes=

Des questions similaires que j'ai vu vous conseille d'exécuter heroku run rake db:migrate, ce qui me donne ce résultat:

Running `rake db:migrate` attached to terminal... up, run.5112
DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/Rakefile:7)
DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/Rakefile:7)
rake aborted!
no such file to load -- nokogiri
/app/lib/tasks/pivotal.rake:8:in `require'
/app/lib/tasks/pivotal.rake:8:in `<top (required)>'
/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:425:in `load'
/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:425:in `block in load_tasks'
/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:425:in `each'
/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:425:in `load_tasks'
/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/application.rb:145:in `load_tasks'
/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/railtie/configurable.rb:30:in `method_missing'
/app/Rakefile:7:in `<top (required)>'
(See full trace by running task with --trace)

La ligne no such file to load -- nokogiri dirait qu'il pourrait être le coupable, mais je ne peux pas comprendre comment résoudre le problème; j'ai essayé de courir bundle install, bundle update, le redémarrage de heroku avec heroku restart et toutes sortes d'autres supposition basée sur les solutions que je ne me souviens pas maintenant, mais ça ne marche toujours pas!

Voici mon Gemfile:

source 'https://rubygems.org'
gem 'rails', '3.2.12'
gem 'bootstrap-sass'
gem 'bcrypt-ruby', '3.0.1'
gem 'paperclip', '~> 3.4.1'
gem 'nokogiri'
gem "watu_table_builder", require: "table_builder"
group :development, :test do
gem 'sqlite3', '1.3.5'
gem 'rspec-rails', '2.13.0'
gem 'guard-rspec', '1.2.1'
gem 'guard-spork', :github => 'guard/guard-spork'
gem 'spork', '0.9.2'
gem 'factory_girl_rails', '4.1.0', :require => false
end
group :development do
gem 'annotate'
end
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'sass-rails',   '3.2.5'
gem 'coffee-rails', '3.2.2'
gem 'uglifier', '1.2.3'
end
gem 'jquery-rails', '2.0.2'
group :test do
gem 'capybara', '1.1.2'
# Gems specific to Mac OS X:
gem 'capybara', '1.1.2'
gem 'rb-fsevent', '0.9.1', :require => false
gem 'growl', '1.0.3'
end
group :production do
gem 'pg', '0.12.2'
end
Avez-vous remarqué cela? ` app[web.1]: /app/app/controllers/application_controller.rb:3:dans <class:ApplicationController>': uninitialized constant ApplicationController::SessionsHelper
Non je n'ai pas. Je suis droit dans le milieu d'un autre projet pour l'instant, mais je vais étudier cela dans peu de temps.
Correctif et mise à jour ici si vous rencontrez toujours des problèmes 🙂

OriginalL'auteur GMA | 2013-04-08