ruby-on-rails-3 - 3.0.7 から 3.2.11 へのアップグレード時に Rails サーバーを起動できませんでした

Question

ruby 1.8.7 を使用しており、既存のアプリケーション用に rails のバージョンを 3.0.7 から 3.2.11 にアップグレードしようとしました。関連するすべてのgemをインストールし、バンドルのインストールも完了しましたが、rails sを使用してrailsサーバーを起動すると、エラーが表示されます。

rails s
=> Booting WEBrick
=> Rails 3.2.11 application starting in development on .....
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
/var/lib/gems/1.8/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require': no such file to load -- journey (LoadError)
    from /var/lib/gems/1.8/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require'
    from /var/lib/gems/1.8/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:236:in `load_dependency'
    from /var/lib/gems/1.8/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require'
    from /var/lib/gems/1.8/gems/actionpack-3.2.11/lib/action_dispatch/routing/route_set.rb:1
    from /var/lib/gems/1.8/gems/railties-3.2.11/lib/rails/engine.rb:489:in `routes'
    from /var/lib/gems/1.8/gems/railties-3.2.11/lib/rails/engine.rb:551
    from /var/lib/gems/1.8/gems/railties-3.2.11/lib/rails/initializable.rb:30:in `instance_exec'
    from /var/lib/gems/1.8/gems/railties-3.2.11/lib/rails/initializable.rb:30:in `run'
    from /var/lib/gems/1.8/gems/railties-3.2.11/lib/rails/initializable.rb:55:in `run_initializers'
    from /var/lib/gems/1.8/gems/railties-3.2.11/lib/rails/initializable.rb:54:in `each'
    from /var/lib/gems/1.8/gems/railties-3.2.11/lib/rails/initializable.rb:54:in `run_initializers'
    from /var/lib/gems/1.8/gems/railties-3.2.11/lib/rails/application.rb:136:in `initialize!'
    from /var/lib/gems/1.8/gems/railties-3.2.11/lib/rails/railtie/configurable.rb:30:in `send'
    from /var/lib/gems/1.8/gems/railties-3.2.11/lib/rails/railtie/configurable.rb:30:in `method_missing'
    from /home/anshul/herematch/config/environment.rb:5
    from /var/lib/gems/1.8/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require'
    from /var/lib/gems/1.8/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require'
    from /var/lib/gems/1.8/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:236:in `load_dependency'
    from /var/lib/gems/1.8/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require'
    from /home/anshul/herematch/config.ru:3
    from /var/lib/gems/1.8/gems/rack-1.2.4/lib/rack/builder.rb:46:in `instance_eval'
    from /var/lib/gems/1.8/gems/rack-1.2.4/lib/rack/builder.rb:46:in `initialize'
    from /home/anshul/herematch/config.ru:1:in `new'
    from /home/anshul/herematch/config.ru:1

私を助けてください！！！