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我正在使用 ruby​​ 1.8.7 并尝试将现有应用程序的 rails 版本从 3.0.7 升级到 3.2.11。我已经安装了所有相关的 gem，并且 bundle install 也完成了，但是当我使用 rails s 启动 rails 服务器时，它向我显示了错误。

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

请帮我！！！

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