a error has occurred in signing in

[nakajijapan]

error message

==> /var/www/app/shared/log/production.log <==
2015-01-07 10:07:43 [INFO] Processing by SessionsController#create as HTML
2015-01-07 10:07:43 [INFO]   Parameters: {"oauth_token"=>"xxxxxxxxxxxxxxxxxxxx", "oauth_verifier"=>"xxxxxxxxxxxxxxxxxxxxxxxx", "provider"=>"twitter"}
2015-01-07 10:07:43 [INFO] Completed 500 Internal Server Error in 4ms
2015-01-07 10:07:43 [FATAL]
ArgumentError (unrecognized option: allow_redirections):
  app/models/user.rb:89:in `process_uri'
  app/models/user.rb:69:in `create_with_omniauth'
  app/controllers/sessions_controller.rb:13:in `create'

==> /var/www/app/shared/log/unicorn.log <==