我正在使用ruby 1.8.7并尝试将rails版本从3.0.7升级到3.2.11以用于现有应用程序。我已经安装了所有相关宝石，并且捆绑安装也已完成但是当我使用rails s启动rails服务器时，它向我显示错误。
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
请帮帮我!!!