Unicorn Strong Parameters Error

gistfile1.txt

I, [2012-09-03T21:50:06.302693 #2848]  INFO -- : worker=0 spawning...
I, [2012-09-03T21:50:06.309153 #18299]  INFO -- : worker=0 spawned pid=18299
I, [2012-09-03T21:50:06.309493 #18299]  INFO -- : Refreshing Gem list
E, [2012-09-03T21:50:15.779250 #18296] ERROR -- : uninitialized constant ActiveModel::ForbiddenAttributesProtection (NameError)
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/rake-0.9.2.2/lib/rake/ext/module.rb:36:in `const_missing'
/home/deploy/discord/releases/20120903214643/app/models/bookmark.rb:2:in `<class:Bookmark>'
/home/deploy/discord/releases/20120903214643/app/models/bookmark.rb:1:in `<top (required)>'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/rake-0.9.2.2/lib/rake/ext/module.rb:36:in `const_missing'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/rake-0.9.2.2/lib/rake/ext/module.rb:36:in `const_missing'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.8/lib/active_support/inflector/methods.rb:230:in `block in constantize'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.8/lib/active_support/inflector/methods.rb:229:in `each'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.8/lib/active_support/inflector/methods.rb:229:in `constantize'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.8/lib/active_support/inflector/methods.rb:260:in `safe_constantize'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.8/lib/active_support/core_ext/string/inflections.rb:66:in `safe_constantize'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_controller/metal/params_wrapper.rb:152:in `_default_wrap_model'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_controller/metal/params_wrapper.rb:169:in `_set_wrapper_defaults'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_controller/metal/params_wrapper.rb:133:in `inherited'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/abstract_controller/railties/routes_helpers.rb:7:in `block (2 levels) in with'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_controller/railties/paths.rb:7:in `block (2 levels) in with'
/home/deploy/discord/releases/20120903214643/app/controllers/api/bookmarks_controller.rb:1:in `<top (required)>'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/engine.rb:439:in `block (2 levels) in eager_load!'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/engine.rb:438:in `each'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/engine.rb:438:in `block in eager_load!'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/engine.rb:436:in `each'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/engine.rb:436:in `eager_load!'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/application/finisher.rb:53:in `block in <module:Finisher>'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/initializable.rb:30:in `instance_exec'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/initializable.rb:30:in `run'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/initializable.rb:55:in `block in run_initializers'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/initializable.rb:54:in `each'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/initializable.rb:54:in `run_initializers'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/application.rb:136:in `initialize!'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/railtie/configurable.rb:30:in `method_missing'
/home/deploy/discord/releases/20120903214643/config/environment.rb:5:in `<top (required)>'
config.ru:4:in `require'
config.ru:4:in `block in <main>'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/builder.rb:51:in `instance_eval'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/builder.rb:51:in `initialize'
config.ru:1:in `new'
config.ru:1:in `<main>'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/unicorn-4.3.1/lib/unicorn.rb:44:in `eval'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/unicorn-4.3.1/lib/unicorn.rb:44:in `block in builder'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/unicorn-4.3.1/lib/unicorn/http_server.rb:696:in `call'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/unicorn-4.3.1/lib/unicorn/http_server.rb:696:in `build_app!'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/unicorn-4.3.1/lib/unicorn/http_server.rb:569:in `init_worker_process'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/unicorn-4.3.1/lib/unicorn/http_server.rb:589:in `worker_loop'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/unicorn-4.3.1/lib/unicorn/http_server.rb:487:in `spawn_missing_workers'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/unicorn-4.3.1/lib/unicorn/http_server.rb:498:in `maintain_worker_count'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/unicorn-4.3.1/lib/unicorn/http_server.rb:272:in `join'
/home/deploy/discord/shared/bundle/ruby/1.9.1/gems/unicorn-4.3.1/bin/unicorn:121:in `<top (required)>'
/home/deploy/discord/shared/bundle/ruby/1.9.1/bin/unicorn:23:in `load'
/home/deploy/discord/shared/bundle/ruby/1.9.1/bin/unicorn:23:in `<main>'
E, [2012-09-03T21:50:15.790338 #2848] ERROR -- : reaped #<Process::Status: pid 18296 exit 1> worker=1