ruby on rails - capistrano error with unicorn & devise -


i trying deploy using capistrano , unicorn. unfortunately, i'm getting the

 we're sorry, went wrong.

message. on development environment works. production.log not show errors. following unicorn.log -- there seems problem devise? appreciated!

/var/www/shared/bundle/ruby/2.0.0/bin/unicorn:23:in `load' /var/www/shared/bundle/ruby/2.0.0/bin/unicorn:23:in `<main>' e, [2013-04-05t15:45:46.051101 #18179] error -- : uninitialized constant devise (nameerror) /var/www/releases/20130405154134/config/initializers/devise.rb:3:in `<top (required)>' /var/www/shared/bundle/ruby/2.0.0/gems/railties-3.2.12/lib/rails/engine.rb:588:in `block (2 levels) in <class:engine>' /var/www/shared/bundle/ruby/2.0.0/gems/railties-3.2.12/lib/rails/engine.rb:587:in `each' /var/www/shared/bundle/ruby/2.0.0/gems/railties-3.2.12/lib/rails/engine.rb:587:in `block in <class:engine>' /var/www/shared/bundle/ruby/2.0.0/gems/railties-3.2.12/lib/rails/initializable.rb:30:in `instance_exec' /var/www/shared/bundle/ruby/2.0.0/gems/railties-3.2.12/lib/rails/initializable.rb:30:in `run' /var/www/shared/bundle/ruby/2.0.0/gems/railties-3.2.12/lib/rails/initializable.rb:55:in `block in run_initializers' /var/www/shared/bundle/ruby/2.0.0/gems/railties-3.2.12/lib/rails/initializable.rb:54:in `each' /var/www/shared/bundle/ruby/2.0.0/gems/railties-3.2.12/lib/rails/initializable.rb:54:in `run_initializers' /var/www/shared/bundle/ruby/2.0.0/gems/railties-3.2.12/lib/rails/application.rb:136:in `initialize!' /var/www/shared/bundle/ruby/2.0.0/gems/railties-3.2.12/lib/rails/railtie/configurable.rb:30:in `method_missing' /var/www/releases/20130405154134/config/environment.rb:5:in `<top (required)>' config.ru:4:in `require' config.ru:4:in `block in <main>' /var/www/shared/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval' /var/www/shared/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize' config.ru:1:in `new' config.ru:1:in `<main>' /var/www/shared/bundle/ruby/2.0.0/gems/unicorn-4.6.2/lib/unicorn.rb:44:in `eval' /var/www/shared/bundle/ruby/2.0.0/gems/unicorn-4.6.2/lib/unicorn.rb:44:in `block in builder' /var/www/shared/bundle/ruby/2.0.0/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:722:in `call' /var/www/shared/bundle/ruby/2.0.0/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:722:in `build_app!' /var/www/shared/bundle/ruby/2.0.0/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:595:in `init_worker_process' /var/www/shared/bundle/ruby/2.0.0/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:615:in `worker_loop' /var/www/shared/bundle/ruby/2.0.0/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:500:in `spawn_missing_workers' /var/www/shared/bundle/ruby/2.0.0/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:511:in `maintain_worker_count' /var/www/shared/bundle/ruby/2.0.0/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:277:in `join' /var/www/shared/bundle/ruby/2.0.0/gems/unicorn-4.6.2/bin/unicorn:126:in `<top (required)>' /var/www/shared/bundle/ruby/2.0.0/bin/unicorn:23:in `load' /var/www/shared/bundle/ruby/2.0.0/bin/unicorn:23:in `<main>' e, [2013-04-05t15:50:20.918137 #5363] error -- : reaped #<process::status: pid 18942 exit 1> worker=0 i, [2013-04-05t15:50:20.918399 #5363]  info -- : worker=0 spawning...


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