Clever Geek Handbook

Rails 4 - error during failover response: undefined "authenticate" method for nil: NilClass

We have a rails 4 application in a production environment, on a webrick server, that crashes and returns a 500 error. The error seems to come from the following error:

Error during failsafe response: undefined method `authenticate' for nil:NilClass
      /usr/local/rvm/gems/ruby-2.1.2/gems/devise-3.2.2/lib/devise/controllers/helpers.rb:58:in `current_user'

We checked the helpers.rb file on line 58, and this comes from the call to the guardent.authenticate function in the current_user method. So, we have imported the 'warden' gem into our Gemfile, but nothing has changed.

We also tried to change the webrick server to the "puma" server, thinking it might come from threads, but nothing changed ...

The whole error is as follows:

Error during failsafe response: undefined method `authenticate' for nil:NilClass
  /usr/local/rvm/gems/ruby-2.1.2/gems/devise-3.2.2/lib/devise/controllers/helpers.rb:58:in `current_user'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/helpers.rb:53:in `current_user'
  /home/dev/myProject/app/views/shared/_top_menu.html.erb:23:in `_app_views_shared__top_menu_html_erb___3475115451092967008_67265400'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/template.rb:143:in `block in render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications.rb:161:in `instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/template.rb:141:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/partial_renderer.rb:306:in `render_partial'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/partial_renderer.rb:279:in `block in render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications.rb:159:in `block in instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications.rb:159:in `instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/abstract_renderer.rb:38:in `instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/partial_renderer.rb:278:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/renderer.rb:47:in `render_partial'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/helpers/rendering_helper.rb:27:in `render'
  /home/dev/myProject/app/views/layouts/application.html.erb:18:in `_app_views_layouts_application_html_erb__2013404122424653986_65265180'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/template.rb:143:in `block in render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications.rb:161:in `instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/template.rb:141:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/template_renderer.rb:61:in `render_with_layout'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/template_renderer.rb:47:in `render_template'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/template_renderer.rb:17:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/renderer.rb:42:in `render_template'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/renderer.rb:23:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/rendering.rb:127:in `_render_template'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/streaming.rb:219:in `_render_template'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/rendering.rb:120:in `render_to_body'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/rendering.rb:33:in `render_to_body'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/renderers.rb:26:in `render_to_body'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/rendering.rb:97:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/rendering.rb:16:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/instrumentation.rb:41:in `block (2 levels) in render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/core_ext/benchmark.rb:12:in `block in ms'
  /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/benchmark.rb:294:in `realtime'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/core_ext/benchmark.rb:12:in `ms'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/instrumentation.rb:41:in `block in render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/instrumentation.rb:84:in `cleanup_view_runtime'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activerecord-4.0.11/lib/active_record/railties/controller_runtime.rb:25:in `cleanup_view_runtime'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/instrumentation.rb:40:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/implicit_render.rb:10:in `default_render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/implicit_render.rb:5:in `send_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/base.rb:189:in `process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/rendering.rb:10:in `process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/callbacks.rb:18:in `block in process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/callbacks.rb:403:in `_run__2818342425517875908__process_action__callbacks'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/callbacks.rb:80:in `run_callbacks'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/callbacks.rb:17:in `process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/rescue.rb:29:in `process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications.rb:159:in `block in instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications.rb:159:in `instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/instrumentation.rb:30:in `process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activerecord-4.0.11/lib/active_record/railties/controller_runtime.rb:18:in `process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/base.rb:136:in `process'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/rendering.rb:44:in `process'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal.rb:195:in `dispatch'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal.rb:231:in `block in action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/routing/route_set.rb:82:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/routing/route_set.rb:82:in `dispatch'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/routing/route_set.rb:50:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/journey/router.rb:71:in `block in call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/journey/router.rb:59:in `each'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/journey/router.rb:59:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/routing/route_set.rb:676:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/middleware/show_exceptions.rb:43:in `render_exception'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/middleware/show_exceptions.rb:33:in `rescue in call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.0.11/lib/rails/rack/logger.rb:38:in `call_app'
  /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.0.11/lib/rails/rack/logger.rb:20:in `block in call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/tagged_logging.rb:68:in `block in tagged'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/tagged_logging.rb:26:in `tagged'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/tagged_logging.rb:68:in `tagged'
  /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.0.11/lib/rails/rack/logger.rb:20:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/middleware/request_id.rb:21:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/methodoverride.rb:21:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/runtime.rb:17:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/cache/strategy/local_cache.rb:83:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/middleware/static.rb:84:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/sendfile.rb:112:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.0.11/lib/rails/engine.rb:511:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.0.11/lib/rails/application.rb:97:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/lock.rb:17:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/content_length.rb:14:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/handler/webrick.rb:60:in `service'
  /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'
  /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'
  /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'
Error during failsafe response: undefined method `authenticate' for nil:NilClass
  /usr/local/rvm/gems/ruby-2.1.2/gems/devise-3.2.2/lib/devise/controllers/helpers.rb:58:in `current_user'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/helpers.rb:53:in `current_user'
  /home/dev/myProject/app/views/shared/_top_menu.html.erb:23:in `_app_views_shared__top_menu_html_erb___3475115451092967008_68619440'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/template.rb:143:in `block in render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications.rb:161:in `instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/template.rb:141:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/partial_renderer.rb:306:in `render_partial'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/partial_renderer.rb:279:in `block in render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications.rb:159:in `block in instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications.rb:159:in `instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/abstract_renderer.rb:38:in `instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/partial_renderer.rb:278:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/renderer.rb:47:in `render_partial'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/helpers/rendering_helper.rb:27:in `render'
  /home/dev/myProject/app/views/layouts/application.html.erb:18:in `_app_views_layouts_application_html_erb__2013404122424653986_65265180'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/template.rb:143:in `block in render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications.rb:161:in `instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/template.rb:141:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/template_renderer.rb:61:in `render_with_layout'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/template_renderer.rb:47:in `render_template'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/template_renderer.rb:17:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/renderer.rb:42:in `render_template'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_view/renderer/renderer.rb:23:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/rendering.rb:127:in `_render_template'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/streaming.rb:219:in `_render_template'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/rendering.rb:120:in `render_to_body'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/rendering.rb:33:in `render_to_body'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/renderers.rb:26:in `render_to_body'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/rendering.rb:97:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/rendering.rb:16:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/instrumentation.rb:41:in `block (2 levels) in render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/core_ext/benchmark.rb:12:in `block in ms'
  /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/benchmark.rb:294:in `realtime'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/core_ext/benchmark.rb:12:in `ms'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/instrumentation.rb:41:in `block in render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/instrumentation.rb:84:in `cleanup_view_runtime'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activerecord-4.0.11/lib/active_record/railties/controller_runtime.rb:25:in `cleanup_view_runtime'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/instrumentation.rb:40:in `render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/implicit_render.rb:10:in `default_render'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/implicit_render.rb:5:in `send_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/base.rb:189:in `process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/rendering.rb:10:in `process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/callbacks.rb:18:in `block in process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/callbacks.rb:403:in `_run__2818342425517875908__process_action__callbacks'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/callbacks.rb:80:in `run_callbacks'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/callbacks.rb:17:in `process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/rescue.rb:29:in `process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications.rb:159:in `block in instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/notifications.rb:159:in `instrument'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/instrumentation.rb:30:in `process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activerecord-4.0.11/lib/active_record/railties/controller_runtime.rb:18:in `process_action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/base.rb:136:in `process'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/abstract_controller/rendering.rb:44:in `process'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal.rb:195:in `dispatch'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_controller/metal.rb:231:in `block in action'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/routing/route_set.rb:82:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/routing/route_set.rb:82:in `dispatch'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/routing/route_set.rb:50:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/journey/router.rb:71:in `block in call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/journey/router.rb:59:in `each'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/journey/router.rb:59:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/routing/route_set.rb:676:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/middleware/show_exceptions.rb:43:in `render_exception'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/middleware/show_exceptions.rb:33:in `rescue in call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.0.11/lib/rails/rack/logger.rb:38:in `call_app'
  /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.0.11/lib/rails/rack/logger.rb:20:in `block in call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/tagged_logging.rb:68:in `block in tagged'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/tagged_logging.rb:26:in `tagged'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/tagged_logging.rb:68:in `tagged'
  /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.0.11/lib/rails/rack/logger.rb:20:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/middleware/request_id.rb:21:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/methodoverride.rb:21:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/runtime.rb:17:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/activesupport-4.0.11/lib/active_support/cache/strategy/local_cache.rb:83:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/actionpack-4.0.11/lib/action_dispatch/middleware/static.rb:84:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/sendfile.rb:112:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.0.11/lib/rails/engine.rb:511:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.0.11/lib/rails/application.rb:97:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/lock.rb:17:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/content_length.rb:14:in `call'
  /usr/local/rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/handler/webrick.rb:60:in `service'
  /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'
  /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'
  /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'
[2014-11-07 13:06:52] FATAL SignalException: SIGTERM
    /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/webrick/server.rb:170:in `select'
    /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/webrick/server.rb:170:in `block in start'
    /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/webrick/server.rb:32:in `start'
    /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/webrick/server.rb:160:in `start'
    /usr/local/rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/handler/webrick.rb:14:in `run'
    /usr/local/rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:264:in `start'
    /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.0.11/lib/rails/commands/server.rb:84:in `start'
    /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.0.11/lib/rails/commands.rb:76:in `block in <top (required)>'
    /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.0.11/lib/rails/commands.rb:71:in `tap'
    /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.0.11/lib/rails/commands.rb:71:in `<top (required)>'
    bin/rails:4:in `require'
    bin/rails:4:in `<main>'
[2014-11-07 13:06:52] INFO  going to shutdown ...
[2014-11-07 13:06:52] INFO  WEBrick::HTTPServer#start done.
Processing by ErrorsController#internal_server_error as HTML
  Rendered errors/internal_server_error.html.erb within layouts/application (0.3ms)
  Rendered shared/_top_menu.html.erb (1.4ms)
Completed 500 Internal Server Error in 3ms

Does anyone have any idea where it might come from?

Update

Another error occurs just before the error described in this post, here is the error:

    ActiveRecord::ConnectionTimeoutError (could not obtain a database connection within 5.000 seconds (waited 5.000 seconds)):
  activerecord (4.0.11) lib/active_record/connection_adapters/abstract/connection_pool.rb:190:in `block in wait_poll'
  activerecord (4.0.11) lib/active_record/connection_adapters/abstract/connection_pool.rb:181:in `loop'
  activerecord (4.0.11) lib/active_record/connection_adapters/abstract/connection_pool.rb:181:in `wait_poll'
  activerecord (4.0.11) lib/active_record/connection_adapters/abstract/connection_pool.rb:136:in `block in poll'
  /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
  activerecord (4.0.11) lib/active_record/connection_adapters/abstract/connection_pool.rb:146:in `synchronize'
  activerecord (4.0.11) lib/active_record/connection_adapters/abstract/connection_pool.rb:134:in `poll'
  activerecord (4.0.11) lib/active_record/connection_adapters/abstract/connection_pool.rb:423:in `acquire_connection'
  activerecord (4.0.11) lib/active_record/connection_adapters/abstract/connection_pool.rb:356:in `block in checkout'
  /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
  activerecord (4.0.11) lib/active_record/connection_adapters/abstract/connection_pool.rb:355:in `checkout'
  activerecord (4.0.11) lib/active_record/connection_adapters/abstract/connection_pool.rb:265:in `block in connection'
  /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
  activerecord (4.0.11) lib/active_record/connection_adapters/abstract/connection_pool.rb:264:in `connection'
  activerecord (4.0.11) lib/active_record/connection_adapters/abstract/connection_pool.rb:546:in `retrieve_connection'
  activerecord (4.0.11) lib/active_record/connection_handling.rb:79:in `retrieve_connection'
  activerecord (4.0.11) lib/active_record/connection_handling.rb:53:in `connection'
  activerecord (4.0.11) lib/active_record/query_cache.rb:51:in `restore_query_cache_settings'
  activerecord (4.0.11) lib/active_record/query_cache.rb:43:in `rescue in call'
  activerecord (4.0.11) lib/active_record/query_cache.rb:32:in `call'
  activerecord (4.0.11) lib/active_record/connection_adapters/abstract/connection_pool.rb:626:in `call'
  actionpack (4.0.11) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
  activesupport (4.0.11) lib/active_support/callbacks.rb:373:in `_run__2890043484802466369__call__callbacks'
  activesupport (4.0.11) lib/active_support/callbacks.rb:80:in `run_callbacks'
  actionpack (4.0.11) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
  actionpack (4.0.11) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
  actionpack (4.0.11) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
  actionpack (4.0.11) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
  railties (4.0.11) lib/rails/rack/logger.rb:38:in `call_app'
  railties (4.0.11) lib/rails/rack/logger.rb:20:in `block in call'
  activesupport (4.0.11) lib/active_support/tagged_logging.rb:68:in `block in tagged'
  activesupport (4.0.11) lib/active_support/tagged_logging.rb:26:in `tagged'
  activesupport (4.0.11) lib/active_support/tagged_logging.rb:68:in `tagged'
  railties (4.0.11) lib/rails/rack/logger.rb:20:in `call'
  actionpack (4.0.11) lib/action_dispatch/middleware/request_id.rb:21:in `call'
  rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
  rack (1.5.2) lib/rack/runtime.rb:17:in `call'
  activesupport (4.0.11) lib/active_support/cache/strategy/local_cache.rb:83:in `call'
  actionpack (4.0.11) lib/action_dispatch/middleware/static.rb:84:in `call'
  rack (1.5.2) lib/rack/sendfile.rb:112:in `call'
  railties (4.0.11) lib/rails/engine.rb:511:in `call'
  railties (4.0.11) lib/rails/application.rb:97:in `call'
  rack (1.5.2) lib/rack/lock.rb:17:in `call'
  rack (1.5.2) lib/rack/content_length.rb:14:in `call'
  rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service'
  /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'
  /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'
  /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'

Update 2

I added the "puma" gem to the Gemfile to enable the multi-threaded puma server, and added the following config / initializers / database_connection.rb:

Rails.application.config.after_initialize do
  ActiveRecord::Base.connection_pool.disconnect!

  ActiveSupport.on_load(:active_record) do
    config = ActiveRecord::Base.configurations[Rails.env] ||
                Rails.application.config.database_configuration[Rails.env]
    config['pool']              = ENV['DB_POOL']      || ENV['MAX_THREADS'] || 5
    ActiveRecord::Base.establish_connection(config)
  end
end

But the error still happens ...

Decision!

We have deployed Apache Server with Capistrano and Phusion Passenger. From now on everything has been working well, no problems with Rails or not being developed or whatever. I think the problem is that we trusted the default Webrick server to run in a production environment, whereas it was only meant to work for development environments ...

Thanks everyone for your help and advice.

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3 answers


As a follow-up for people who find this error from Google. If you are using Devise this error will occur when it fails to initialize correctly. If you look at your logs, you may find another boot error that prevents Devise from initializing. The column is irrelevant in this case.



In my case, the root problem was that I had pending migrations.

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After installing Apache Server + Phusion Passenger + Capistrano and a well set up environment for production deployment, everything works well. (Only the webrick server for creating the env was, spectacularly, a bad idea ... even for the beta)



Thanks to everyone who helped us and answered our questions.

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My similar problem was that I tried to capture the 404 error, but I had an image with the wrong mapping and always crashed to the error page until my project was locked. And then I had this problem too:

ActiveRecord::ConnectionTimeoutError (could not obtain a database connection within 5.000 seconds (waited 5.000 seconds))

The solution has fixed the display and any other recurring error like this.

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