Ruby on Rails application could not be started

These are the possible causes:
  • There may be a syntax error in the application's code. Please check for such errors and fix them.
  • A required library may not installed. Please install all libraries that this application requires.
  • The application may not be properly configured. Please check whether all configuration files are written correctly, fix any incorrect configurations, and restart this application.
  • A service that the application relies on (such as the database server or the Ferret search engine server) may not have been started. Please start that service.
Further information about the error may have been written to the application's log file. Please check it in order to analyse the problem.
Error message:
No space left on device - <STDERR>
Exception class:
Errno::ENOSPC
Application root:
/var/www/omoshiro-apps.com
Backtrace:
# File Line Location
0 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/utils.rb 527 in `write'
1 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/utils.rb 527 in `method_missing'
2 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/rack-1.4.7/lib/rack/session/cookie.rb 85 in `warn'
3 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/rack-1.4.7/lib/rack/session/cookie.rb 85 in `initialize'
4 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/middleware/session/abstract_store.rb 28 in `initialize'
5 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/middleware/stack.rb 43 in `new'
6 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/middleware/stack.rb 43 in `build'
7 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/middleware/stack.rb 113 in `block in build'
8 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/middleware/stack.rb 113 in `each'
9 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/middleware/stack.rb 113 in `inject'
10 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/middleware/stack.rb 113 in `build'
11 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/engine.rb 470 in `app'
12 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/application/finisher.rb 31 in `block in '
13 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/initializable.rb 30 in `instance_exec'
14 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/initializable.rb 30 in `run'
15 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/initializable.rb 55 in `block in run_initializers'
16 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/initializable.rb 54 in `each'
17 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/initializable.rb 54 in `run_initializers'
18 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/application.rb 136 in `initialize!'
19 /var/www/omoshiro-apps.com/vendor/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/railtie/configurable.rb 30 in `method_missing'
20 /var/www/omoshiro-apps.com/config/environment.rb 5 in `'
21 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/classic_rails/application_spawner.rb 222 in `require'
22 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/classic_rails/application_spawner.rb 222 in `preload_application'
23 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/classic_rails/application_spawner.rb 181 in `block in initialize_server'
24 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/utils.rb 563 in `report_app_init_status'
25 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/classic_rails/application_spawner.rb 174 in `initialize_server'
26 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server.rb 204 in `start_synchronously'
27 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server.rb 180 in `start'
28 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/classic_rails/application_spawner.rb 149 in `start'
29 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/spawn_manager.rb 219 in `block (2 levels) in spawn_rails_application'
30 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server_collection.rb 132 in `lookup_or_add'
31 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/spawn_manager.rb 214 in `block in spawn_rails_application'
32 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server_collection.rb 82 in `block in synchronize'
33 prelude> 10:in `synchronize'
34 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server_collection.rb 79 in `synchronize'
35 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/spawn_manager.rb 213 in `spawn_rails_application'
36 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/spawn_manager.rb 132 in `spawn_application'
37 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/spawn_manager.rb 275 in `handle_spawn_application'
38 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server.rb 357 in `server_main_loop'
39 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/lib/phusion_passenger/abstract_server.rb 206 in `start_synchronously'
40 /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.21/helper-scripts/passenger-spawn-server 99 in `
'