Ruby on Rails application could not be started

A source file that the application requires, is missing.
  • It is possible that you didn't upload your application files correctly. Please check whether all your application files are uploaded.
  • A required library may not installed. Please install all libraries that this application requires.
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 such file to load -- config/environment
Exception class:
LoadError
Application root:
/var/www/vhosts/chris-gallagher.com/httpdocs/simplelog_2.0.2
Backtrace:
# File Line Location
0 /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb 27 in `gem_original_require'
1 /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb 27 in `require'
2 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb 252 in `preload_application'
3 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb 212 in `initialize_server'
4 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/utils.rb 181 in `report_app_init_status'
5 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb 201 in `initialize_server'
6 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb 166 in `start_synchronously'
7 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb 135 in `start'
8 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb 112 in `fork'
9 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb 112 in `start'
10 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/railz/application_spawner.rb 177 in `start'
11 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb 218 in `spawn_rails_application'
12 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb 213 in `synchronize'
13 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb 213 in `spawn_rails_application'
14 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb 122 in `spawn_application'
15 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/spawn_manager.rb 247 in `handle_spawn_application'
16 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb 317 in `__send__'
17 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb 317 in `main_loop'
18 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/lib/passenger/abstract_server.rb 168 in `start_synchronously'
19 /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/bin/passenger-spawn-server 46