Ruby on Rails

    => Booting Thin      => Rails 4.0.0 application starting in development on http://0.0.0.0:3000      => Run `rails server -h` for more startup options      => Ctrl-C to shutdown server      Exiting              /usr/local/share/gems/gems/railties-4.0.0/lib/rails/railtie/configuration.rb:95:in `method_missing': undefined method `active_record' for #<Rails::Application::Configuration:0x28cf0b0> (NoMethodError)      from /home/user1/RubyOnRails/site1/config/environments/development.rb:23:in `block in <top (required)>'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:24:in `class_eval'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:24:in `configure'      from /home/user1/RubyOnRails/site1/config/environments/development.rb:1:in `<top (required)>'      from /usr/local/share/gems/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require'      from /usr/local/share/gems/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `block in require'      from /usr/local/share/gems/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:213:in `load_dependency'      from /usr/local/share/gems/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/engine.rb:591:in `block (2 levels) in <class:Engine>'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/engine.rb:590:in `each'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/engine.rb:590:in `block in <class:Engine>'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `instance_exec'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `run'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/initializable.rb:55:in `block in run_initializers'      from /usr/share/ruby/tsort.rb:150:in `block in tsort_each'      from /usr/share/ruby/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component'      from /usr/share/ruby/tsort.rb:210:in `block (2 levels) in each_strongly_connected_component_from'      from /usr/share/ruby/tsort.rb:219:in `each_strongly_connected_component_from'      from /usr/share/ruby/tsort.rb:209:in `block in each_strongly_connected_component_from'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/initializable.rb:44:in `each'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/initializable.rb:44:in `tsort_each_child'      from /usr/share/ruby/tsort.rb:203:in `each_strongly_connected_component_from'      from /usr/share/ruby/tsort.rb:182:in `block in each_strongly_connected_component'      from /usr/share/ruby/tsort.rb:180:in `each'      from /usr/share/ruby/tsort.rb:180:in `each_strongly_connected_component'      from /usr/share/ruby/tsort.rb:148:in `tsort_each'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/initializable.rb:54:in `run_initializers'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/application.rb:215:in `initialize!'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:30:in `method_missing'      from /home/user1/RubyOnRails/site1/config/environment.rb:5:in `<top (required)>'      from /home/user1/RubyOnRails/site1/config.ru:3:in `require'      from /home/user1/RubyOnRails/site1/config.ru:3:in `block in <main>'      from /usr/local/share/gems/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval'      from /usr/local/share/gems/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize'      from /home/user1/RubyOnRails/site1/config.ru:in `new'      from /home/user1/RubyOnRails/site1/config.ru:in `<main>'      from /usr/local/share/gems/gems/rack-1.5.2/lib/rack/builder.rb:49:in `eval'      from /usr/local/share/gems/gems/rack-1.5.2/lib/rack/builder.rb:49:in `new_from_string'      from /usr/local/share/gems/gems/rack-1.5.2/lib/rack/builder.rb:40:in `parse_file'      from /usr/local/share/gems/gems/rack-1.5.2/lib/rack/server.rb:277:in `build_app_and_options_from_config'      from /usr/local/share/gems/gems/rack-1.5.2/lib/rack/server.rb:199:in `app'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/commands/server.rb:48:in `app'      from /usr/local/share/gems/gems/rack-1.5.2/lib/rack/server.rb:314:in `wrapped_app'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/commands/server.rb:75:in `start'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/commands.rb:78:in `block in <top (required)>'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/commands.rb:73:in `tap'      from /usr/local/share/gems/gems/railties-4.0.0/lib/rails/commands.rb:73:in `<top (required)>'      from bin/rails:4:in `require'      from bin/rails:4:in `<main>'

  actionmailer (4.0.0)  actionpack (4.0.0)  activemodel (4.0.0)  activerecord (4.0.0)  activerecord-deprecated_finders (1.0.3)  activeresource (4.0.0)  activesupport (4.0.0)  addressable (2.3.5)  arel (4.0.0)  atomic (1.1.12)  backports (3.3.3)  bigdecimal (1.2.1)  builder (3.2.2, 3.1.4)  bundler (1.3.5)  coffee-rails (4.0.0)  coffee-script (2.2.0)  coffee-script-source (1.6.3)  daemons (1.1.9)  diff-lcs (1.2.4)  erubis (2.7.0)  eventmachine (1.0.3)  excon (0.25.3)  execjs (1.4.0)  heroku (2.40.0)  heroku-api (0.3.14)  hike (1.2.3)  i18n (0.6.4)  innate (2013.02.21)  io-console (0.4.2)  jbuilder (1.5.0)  journey (1.0.4)  jquery-rails (3.0.4)  json (1.8.0)  launchy (2.3.0)  mail (2.5.4)  mime-types (1.23)  mini_portile (0.5.1)  minitest (5.0.6, 4.7.5)  multi_json (1.7.9)  multipart-post (1.2.0)  net-http-persistent (2.9)  netrc (0.7.7)  nosql (0.0.3)  polyglot (0.3.3)  rack (1.5.2)  rack-cache (1.2)  rack-ssl (1.3.3)  rack-test (0.6.2)  rails (4.0.0)  rails-observers (0.1.2)  railties (4.0.0)  rake (10.1.0)  rake-compiler (0.9.1)  ramaze (2012.12.08)  rdoc (4.0.1, 3.12.2)  rest-client (1.6.7)  rspec (2.14.1)  rspec-core (2.14.4)  rspec-expectations (2.14.0)  rspec-mocks (2.14.2)  rspec-spies (2.1.4)  rubygems-update (2.0.6)  rubyzip (0.9.9)  sass (3.2.10)  sass-rails (4.0.0)  sdoc (0.3.20)  specific_install (0.2.3)  sprockets (2.10.0)  sprockets-rails (2.0.0)  sqlite3 (1.3.7)  thin (1.5.1)  thor (0.18.1, 0.14.6)  thread_safe (0.1.2)  tilt (1.4.1)  treetop (1.4.14)  turbolinks (1.3.0)  tzinfo (0.3.37)  uglifier (2.1.2)  vulcan (0.8.2)