Forum: Ruby on Rails Status: 500 Internal Server Error when starting ruby applica

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E5e25d02ce063beb392d4275b34faf80?d=identicon&s=25 Shaji Zaidi (readrabbit)
on 2009-05-28 20:27
I am trying to run an Ruby on Rails application developed internally.
Any input would be greatly appreciated…

When I start the server I get the following warning:

[shajizaidi@worf script]$ ./server
=> Booting WEBrick
=> Rails 2.3.2 application starting on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
[2009-05-28 18:29:41] INFO  WEBrick 1.3.1
[2009-05-28 18:29:41] INFO  ruby 1.8.7 (2008-08-11) [i686-linux]
[2009-05-28 18:29:46] WARN  TCPServer Error: Address already in use -
bind(2)
[2009-05-28 18:29:46] INFO  WEBrick::HTTPServer#start: pid=4587
port=3000

I have checked that there is no other application using port 3000

With lsof | grep 3000

I have tried to start the WEBrick on a different port and get the same
warning:

[shajizaidi@worf script]$ ./server -p 3001
=> Booting WEBrick
=> Rails 2.3.2 application starting on http://0.0.0.0:3001
=> Call with -d to detach
=> Ctrl-C to shutdown server
[2009-05-28 19:12:34] INFO  WEBrick 1.3.1
[2009-05-28 19:12:34] INFO  ruby 1.8.7 (2008-08-11) [i686-linux]
[2009-05-28 19:12:39] WARN  TCPServer Error: Address already in use -
bind(2)
[2009-05-28 19:12:39] INFO  WEBrick::HTTPServer#start: pid=4805
port=3001

When I try to access the application through the firefox browser I get
the following error and trace:

  SQL (0.2ms)   SET NAMES 'utf8'
  SQL (0.1ms)   SET SQL_AUTO_IS_NULL=0
/!\ FAILSAFE /!\  Thu May 28 19:15:14 -0700 2009
  Status: 500 Internal Server Error
  no such file to load -- lib/zmags/zmags
    /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
    /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
    /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in
`require'
    /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:521:in
`new_constants_in'
    /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:156:in
`require'
    /home/shajizaidi/e-mangue/app/controllers/application_controller.rb:5
    /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:380:in
`load_without_new_constant_marking'
    /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:380:in
`load_file'
    /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:521:in
`new_constants_in'
    /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:379:in
`load_file'
    /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:259:in
`require_or_load'
    /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:425:in
`load_missing_constant'
    /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:80:in
`const_missing'
    /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:92:in
`const_missing'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/dispatcher.rb:90:in
`dispatch'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/dispatcher.rb:111:in
`_call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/dispatcher.rb:82:in
`initialize'
    /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/query_cache.rb:29:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/query_cache.rb:29:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/connection_adapters/abstract/query_cache.rb:34:in
`cache'
    /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/query_cache.rb:9:in
`cache'
    /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/query_cache.rb:28:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:361:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/head.rb:9:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/methodoverride.rb:24:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/params_parser.rb:15:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/rewindable_input.rb:25:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/session/cookie_store.rb:93:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/reloader.rb:9:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/failsafe.rb:11:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/lock.rb:11:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/lock.rb:11:in
`synchronize'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/lock.rb:11:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/dispatcher.rb:106:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/rails/rack/static.rb:31:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/urlmap.rb:46:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/urlmap.rb:40:in
`each'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/urlmap.rb:40:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/rails/rack/log_tailer.rb:17:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/content_length.rb:13:in
`call'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/handler/webrick.rb:46:in
`service'
    /usr/local/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
    /usr/local/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
    /usr/local/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
    /usr/local/lib/ruby/1.8/webrick/server.rb:162:in `start'
    /usr/local/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
    /usr/local/lib/ruby/1.8/webrick/server.rb:95:in `start'
    /usr/local/lib/ruby/1.8/webrick/server.rb:92:in `each'
    /usr/local/lib/ruby/1.8/webrick/server.rb:92:in `start'
    /usr/local/lib/ruby/1.8/webrick/server.rb:23:in `start'
    /usr/local/lib/ruby/1.8/webrick/server.rb:82:in `start'
    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/handler/webrick.rb:13:in
`run'
    /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/commands/server.rb:111
    /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
    /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
    ./server:3
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