Can't start server (Guide 5: Adding Authentication with Devise)

[declanatticus]

In the step 5: Create your first user, so I tried to start the server to create account. But it couldn't start and show this:

Declan:railsgirls declan$ rails s
=> Booting WEBrick
=> Rails 4.2.1 application starting in development on http://localhost:3000
=> Run rails server -h for more startup options
=> Ctrl-C to shutdown server
Exiting
/Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activerecord-4.2.1/lib/active_record/dynamic_matchers.rb:26:in method_missing': undefined methoddevise' for User (call 'User.connection' to establish a connection):Class (NoMethodError)
from /Users/declan/Documents/Tuts/Ruby/railsgirls/app/models/user.rb:4:in <class:User>' from /Users/declan/Documents/Tuts/Ruby/railsgirls/app/models/user.rb:1:in<top (required)>'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:457:in load' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:457:inblock in load_file'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:647:in new_constants_in' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:456:inload_file'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:354:in require_or_load' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:494:inload_missing_constant'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:184:in const_missing' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/inflector/methods.rb:261:inconst_get'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/inflector/methods.rb:261:in block in constantize' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/inflector/methods.rb:259:ineach'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/inflector/methods.rb:259:in inject' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/inflector/methods.rb:259:inconstantize'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:566:in get' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:597:inconstantize'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/devise-3.4.1/lib/devise.rb:302:in get' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/devise-3.4.1/lib/devise/mapping.rb:80:into'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/devise-3.4.1/lib/devise/mapping.rb:75:in modules' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/devise-3.4.1/lib/devise/mapping.rb:92:inroutes'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/devise-3.4.1/lib/devise/mapping.rb:159:in default_used_route' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/devise-3.4.1/lib/devise/mapping.rb:69:ininitialize'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/devise-3.4.1/lib/devise.rb:336:in new' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/devise-3.4.1/lib/devise.rb:336:inadd_mapping'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/devise-3.4.1/lib/devise/rails/routes.rb:224:in block in devise_for' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/devise-3.4.1/lib/devise/rails/routes.rb:223:ineach'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/devise-3.4.1/lib/devise/rails/routes.rb:223:in devise_for' from /Users/declan/Documents/Tuts/Ruby/railsgirls/config/routes.rb:2:inblock in <top (required)>'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action_dispatch/routing/route_set.rb:432:in instance_exec' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action_dispatch/routing/route_set.rb:432:ineval_block'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action_dispatch/routing/route_set.rb:410:in draw' from /Users/declan/Documents/Tuts/Ruby/railsgirls/config/routes.rb:1:in<top (required)>'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in load' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:inblock in load'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:240:in load_dependency' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:inload'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:40:in block in load_paths' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:40:ineach'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:40:in load_paths' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:16:inreload!'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:26:in block in updater' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/file_update_checker.rb:75:incall'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/file_update_checker.rb:75:in execute' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:27:inupdater'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:7:in execute_if_updated' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/finisher.rb:69:inblock in module:Finisher'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/initializable.rb:30:in instance_exec' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/initializable.rb:30:inrun'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/initializable.rb:55:in block in run_initializers' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/2.1.0/tsort.rb:226:inblock in tsort_each'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/2.1.0/tsort.rb:348:in block (2 levels) in each_strongly_connected_component' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/2.1.0/tsort.rb:427:ineach_strongly_connected_component_from'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/2.1.0/tsort.rb:347:in block in each_strongly_connected_component' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/2.1.0/tsort.rb:345:ineach'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/2.1.0/tsort.rb:345:in call' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/2.1.0/tsort.rb:345:ineach_strongly_connected_component'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/2.1.0/tsort.rb:224:in tsort_each' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/2.1.0/tsort.rb:205:intsort_each'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/initializable.rb:54:in run_initializers' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application.rb:352:ininitialize!'
from /Users/declan/Documents/Tuts/Ruby/railsgirls/config/environment.rb:5:in <top (required)>' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:274:inrequire'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:274:in block in require' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:240:inload_dependency'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:274:in require' from /Users/declan/Documents/Tuts/Ruby/railsgirls/config.ru:3:inblock in

'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.0/lib/rack/builder.rb:55:in instance_eval' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.0/lib/rack/builder.rb:55:ininitialize'
from /Users/declan/Documents/Tuts/Ruby/railsgirls/config.ru:in new' from /Users/declan/Documents/Tuts/Ruby/railsgirls/config.ru:in'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.0/lib/rack/builder.rb:49:in eval' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.0/lib/rack/builder.rb:49:innew_from_string'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.0/lib/rack/builder.rb:40:in parse_file' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.0/lib/rack/server.rb:299:inbuild_app_and_options_from_config'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.0/lib/rack/server.rb:208:in app' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/commands/server.rb:61:inapp'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/rack-1.6.0/lib/rack/server.rb:336:in wrapped_app' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/commands/server.rb:139:inlog_to_stdout'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/commands/server.rb:78:in start' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:80:inblock in server'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:75:in tap' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:75:inserver'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:39:in run_command!' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/commands.rb:17:in<top (required)>'
from /Users/declan/Documents/Tuts/Ruby/railsgirls/bin/rails:8:in require' from /Users/declan/Documents/Tuts/Ruby/railsgirls/bin/rails:8:in<top (required)>'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/spring-1.3.4/lib/spring/client/rails.rb:28:in load' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/spring-1.3.4/lib/spring/client/rails.rb:28:incall'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/spring-1.3.4/lib/spring/client/command.rb:7:in call' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/spring-1.3.4/lib/spring/client.rb:26:inrun'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/spring-1.3.4/bin/spring:48:in <top (required)>' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/spring-1.3.4/lib/spring/binstub.rb:11:inload'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/spring-1.3.4/lib/spring/binstub.rb:11:in <top (required)>' from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:inrequire'
from /Users/declan/.rbenv/versions/2.1.3/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in require' from /Users/declan/Documents/Tuts/Ruby/railsgirls/bin/spring:13:in<top (required)>'
from bin/rails:3:in load' from bin/rails:3:in'

HELP! THANKS!

[alicetragedy]

hey @declanatticus, it looks like devise was not set up properly. In your rails app, can you find the devise initializer under config/initializers/devise.rb? If not, it might be that you forgot to run rails generate devise:install (Step 2). Please let me know if this helped!