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我是 Rails新手,在我正在完成devise教程中遇到了麻烦。

在尝试测试应用程序(之前运行良好)并启动$ rails s时,我得到以下堆栈跟踪:

Patricks-MacBook-Air:rails-prelaunch-signup patrickvihtelic$ rails s
/Users/patrickvihtelic/code/rails-prelaunch-signup/config/application.rb:13:in `require': cannot load such file -- devise (LoadError)
    from /Users/patrickvihtelic/code/rails-prelaunch-signup/config/application.rb:13:in `<top (required)>'
    from /Users/patrickvihtelic/.rvm/gems/ruby-1.9.3-p194@rails326/gems/railties-3.2.8/lib/rails/commands.rb:53:in `require'
    from /Users/patrickvihtelic/.rvm/gems/ruby-1.9.3-p194@rails326/gems/railties-3.2.8/lib/rails/commands.rb:53:in `block in <top (required)>'
    from /Users/patrickvihtelic/.rvm/gems/ruby-1.9.3-p194@rails326/gems/railties-3.2.8/lib/rails/commands.rb:50:in `tap'
    from /Users/patrickvihtelic/.rvm/gems/ruby-1.9.3-p194@rails326/gems/railties-3.2.8/lib/rails/commands.rb:50:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

任何提示或建议将不胜感激 - 谢谢!

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