“Routes.rb: 56: in` block dans ‘: constante non initialisée LetterOpenerWeb (NameError) “

J’ai donc essayé d’installer des gems sans succès et quand j’ai essayé de lancer “rails server”, j’ai reçu un message disant que je devais exécuter “bundle install” car il ne pouvait trouver rake-10.3.2 dans aucune des sources (Note cela avant, le serveur de rails fonctionnait très bien). Après tout ce qui était terminé, j’ai encore essayé “rails server” et j’ai reçu ce message:

=> Booting WEBrick => Rails 4.1.4 application starting in development on http://0.0.0.0:3000 => Run `rails server -h` for more startup options => Notice: server is listening on all interfaces (0.0.0.0). Consider using 127.0.0.1 (--binding option) => Ctrl-C to shutdown server Exiting /home/ricardo/future/config/routes.rb:56:in `block in ': uninitialized constant LetterOpenerWeb (NameError) from /home/ricardo/future/vendor/bundle/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `instance_exec' from /home/ricardo/future/vendor/bundle/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `eval_block' from /home/ricardo/future/vendor/bundle/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:315:in `draw' from /home/ricardo/future/config/routes.rb:1:in `' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `block in load_paths' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `each' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `load_paths' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:16:in `reload!' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:26:in `block in updater' from /home/ricardo/future/vendor/bundle/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `call' from /home/ricardo/future/vendor/bundle/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `execute' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:27:in `updater' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:7:in `execute_if_updated' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/application/finisher.rb:71:in `block in ' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `instance_exec' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `run' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/initializable.rb:55:in `block in run_initializers' from /home/ricardo/.rbenv/versions/2.1.4/lib/ruby/2.1.0/tsort.rb:226:in `block in tsort_each' from /home/ricardo/.rbenv/versions/2.1.4/lib/ruby/2.1.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component' from /home/ricardo/.rbenv/versions/2.1.4/lib/ruby/2.1.0/tsort.rb:427:in `each_strongly_connected_component_from' from /home/ricardo/.rbenv/versions/2.1.4/lib/ruby/2.1.0/tsort.rb:347:in `block in each_strongly_connected_component' from /home/ricardo/.rbenv/versions/2.1.4/lib/ruby/2.1.0/tsort.rb:345:in `each' from /home/ricardo/.rbenv/versions/2.1.4/lib/ruby/2.1.0/tsort.rb:345:in `call' from /home/ricardo/.rbenv/versions/2.1.4/lib/ruby/2.1.0/tsort.rb:345:in `each_strongly_connected_component' from /home/ricardo/.rbenv/versions/2.1.4/lib/ruby/2.1.0/tsort.rb:224:in `tsort_each' from /home/ricardo/.rbenv/versions/2.1.4/lib/ruby/2.1.0/tsort.rb:205:in `tsort_each' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/initializable.rb:54:in `run_initializers' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/application.rb:300:in `initialize!' from /home/ricardo/future/config/environment.rb:5:in `' from /home/ricardo/future/config.ru:3:in `block in ' from /home/ricardo/future/vendor/bundle/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval' from /home/ricardo/future/vendor/bundle/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize' from /home/ricardo/future/config.ru:in `new' from /home/ricardo/future/config.ru:in `' from /home/ricardo/future/vendor/bundle/gems/rack-1.5.2/lib/rack/builder.rb:49:in `eval' from /home/ricardo/future/vendor/bundle/gems/rack-1.5.2/lib/rack/builder.rb:49:in `new_from_ssortingng' from /home/ricardo/future/vendor/bundle/gems/rack-1.5.2/lib/rack/builder.rb:40:in `parse_file' from /home/ricardo/future/vendor/bundle/gems/rack-1.5.2/lib/rack/server.rb:277:in `build_app_and_options_from_config' from /home/ricardo/future/vendor/bundle/gems/rack-1.5.2/lib/rack/server.rb:199:in `app' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/commands/server.rb:50:in `app' from /home/ricardo/future/vendor/bundle/gems/rack-1.5.2/lib/rack/server.rb:314:in `wrapped_app' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/commands/server.rb:130:in `log_to_stdout' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/commands/server.rb:67:in `start' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:81:in `block in server' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:76:in `tap' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:76:in `server' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/commands/commands_tasks.rb:40:in `run_command!' from /home/ricardo/future/vendor/bundle/gems/railties-4.1.4/lib/rails/commands.rb:17:in `' from bin/rails:4:in `require' from bin/rails:4:in `' 

Je n’ai aucune idée de la raison pour laquelle le rake manquait ou pourquoi quelque chose ne va pas avec /routes.rb. Travailler avec Ubuntu 16.04 si cela est pertinent.

MODIFIER:

Code de /routes.rb:

• Impossible de lancer le serveur de rails après la réinstallation de rvm / rails
• localhost: 3000 ne se chargera pas pendant le fonctionnement du serveur, mais il fonctionnera après le redémarrage de l’ordinateur
• La page localhost ne fonctionne pas ruby ​​rails puma osx
• Impossible d’exécuter le serveur de rails: `require ‘: impossible de charger un tel fichier – net / ssh (LoadError)
• Serveur Rails de commandes

  55 if Rails.env.development? 56 mount LetterOpenerWeb::Engine, at: "/letter_opener" 57 end 

EDIT 2:

Gemfile:

 group :development do gem 'annotate' gem 'letter_opener_web' gem "better_errors" gem "binding_of_caller" end 

Gemfile.lock:

 letter_opener (1.2.0) launchy (~> 2.2) letter_opener_web (1.2.3) letter_opener (~> 1.0) rails (>= 3.2) 

• La connexion Nginx / Unicorn / Rails a expiré
• Configuration requirejse pour le serveur Ruby on Rails
• Problèmes de serveur Rails
• puma start causes “Il y a déjà un serveur lié à: ” erreur
• application de rails de liaison sur l’adresse IP fournie par l’hôte avec le port 3000