Heroku app crashes but not locally

Heroku app crashes but not locally

Like the title says, it crashes on Heroku but not locally. I have the logs
but could not find anything to help to solve this problem.
I have created a new app but the problem still happening.
Thanks for any help
Thanks
2013-09-17T19:57:30.321689+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:502:in
`load_missing_constant'
2013-09-17T19:57:30.421184+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:192:in
`block in const_missing'
2013-09-17T19:57:30.525746+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:190:in
`each'
2013-09-17T19:57:30.627736+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:190:in
`const_missing'
2013-09-17T19:57:30.731831+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/inflector/methods.rb:230:in
`block in constantize'
2013-09-17T19:57:30.834073+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/inflector/methods.rb:229:in
`each'
2013-09-17T19:57:30.946532+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/inflector/methods.rb:229:in
`constantize'
2013-09-17T19:57:31.050229+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/inflector/methods.rb:260:in
`safe_constantize'
2013-09-17T19:57:31.150334+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/core_ext/string/inflections.rb:66:in
`safe_constantize'
2013-09-17T19:57:30.896776+00:00 heroku[web.1]: Process exited with status 1
2013-09-17T19:57:31.249699+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/actionpack-3.2.13/lib/action_controller/metal/params_wrapper.rb:152:in
`_default_wrap_model'
2013-09-17T19:57:31.352109+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/actionpack-3.2.13/lib/action_controller/metal/params_wrapper.rb:169:in
`_set_wrapper_defaults'
2013-09-17T19:57:31.452516+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/actionpack-3.2.13/lib/action_controller/metal/params_wrapper.rb:133:in
`inherited'
2013-09-17T19:57:31.551705+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/actionpack-3.2.13/lib/abstract_controller/railties/routes_helpers.rb:7:in
`block (2 levels) in with'
2013-09-17T19:57:31.653297+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/actionpack-3.2.13/lib/action_controller/railties/paths.rb:7:in
`block (2 levels) in with'
2013-09-17T19:57:31.753252+00:00 app[web.1]: from
/app/app/controllers/transactions_controller.rb:1:in `<top (required)>'
2013-09-17T19:57:31.861462+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in
`require'
2013-09-17T19:57:31.960869+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in
`block in require'
2013-09-17T19:57:32.069402+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in
`load_dependency'
2013-09-17T19:57:32.174620+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/de
pendencies.rb:251:in `require'
2013-09-17T19:57:32.274194+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:359:in
`require_or_load'
2013-09-17T19:57:32.378424+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:313:in
`depend_on'
2013-09-17T19:57:32.491041+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:225:in
`require_dependency'
2013-09-17T19:57:32.590884+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/engine.rb:439:in
`block (2 levels) in eager_load!'
2013-09-17T19:57:32.690300+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/engine.rb:438:in
`each'
2013-09-17T19:57:32.792440+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/engine.rb:438:in
`block in eager_load!'
2013-09-17T19:57:32.894084+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/engine.rb:436:in
`each'
2013-09-17T19:57:32.998078+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/engine.rb:436:in
`eager_load!'
2013-09-17T19:57:33.098174+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/application/finisher.rb:53:in
`block in <module:Finisher>'
2013-09-17T19:57:33.216015+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/initializable.rb:30:in
`instance_exec'
2013-09-17T19:57:33.315561+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/initializable.rb:30:in
`run'
2013-09-17T19:57:33.414650+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/initializable.rb:55:in
`block in run_initializers'
2013-09-17T19:57:30.905790+00:00 heroku[web.1]: State changed from
starting to crashed
2013-09-17T19:57:33.522645+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/initializable.rb:54:in
`each'
2013-09-17T19:57:33.628948+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/initializable.rb:54:in
`run_initializers'
2013-09-17T19:57:33.734915+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/application.rb:136:in
`initialize!'
2013-09-17T19:57:33.834196+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in
`method_missing'
2013-09-17T19:57:33.936142+00:00 app[web.1]: from
/app/config/environment.rb:6:in `<top (required)>'
2013-09-17T19:57:34.049350+00:00 app[web.1]: from config.ru:3:in `require'
2013-09-17T19:57:34.149198+00:00 app[web.1]: from config.ru:3:in `block
in <main>'
2013-09-17T19:57:34.249144+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/builder.rb:51:in
`instance_eval'
2013-09-17T19:57:34.353380+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/builder.rb:51:in
`initialize'
2013-09-17T19:57:34.458307+00:00 app[web.1]: from config.ru:1:in `new'
2013-09-17T19:57:34.569933+00:00 app[web.1]: from config.ru:1:in `<main>'
2013-09-17T19:57:34.680046+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/thin-1.5.1/lib/rack/adapter/loader.rb:33:in
`eval'
2013-09-17T19:57:34.783725+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/thin-1.5.1/lib/rack/adapter/loader.rb:33:in
`load'
2013-09-17T19:57:34.890167+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/thin-1.5.1/lib/thin/controllers/controller.rb:181:in
`load_rackup_config'
2013-09-17T19:57:34.993094+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/thin-1.5.1/lib/thin/controllers/controller.rb:71:in
`start'
2013-09-17T19:57:35.098098+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/thin-1.5.1/lib/thin/runner.rb:187:in
`run_command'
2013-09-17T19:57:35.197156+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/thin-1.5.1/lib/thin/runner.rb:152:in
`run!'
2013-09-17T19:57:35.299810+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/thin-1.5.1/bin/thin:6:in `<top
(required)>'