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，在最近几天，我无法运行rails server/rails s甚至bundle exec rails server命令了。 之前它运行得像个魅力。无法在我的应用程序中运行rails server（主动支持错误）
我试图恢复使用git的变化，但没有运气，我试着所有可能的礼仪，我可以想到的。 我使用rubymine，但使用终端时也出现同样的问题。
当我运行：
[email protected]:~/ts$ rails server
我收到以下错误堆栈跟踪：
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `block in require'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in `load_dependency'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
from /home/ma/.rvm/gems/[email protected]/gems/unicorn-4.6.2/lib/unicorn/http_request.rb:4:in `<top (required)>'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `block in require'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in `load_dependency'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
from /home/ma/.rvm/gems/[email protected]/gems/unicorn-4.6.2/lib/unicorn.rb:103:in `<top (required)>'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/bundler-1.3.4/lib/bundler/runtime.rb:72:in `require'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/bundler-1.3.4/lib/bundler/runtime.rb:72:in `block (2 levels) in require'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/bundler-1.3.4/lib/bundler/runtime.rb:70:in `each'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/bundler-1.3.4/lib/bundler/runtime.rb:70:in `block in require'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/bundler-1.3.4/lib/bundler/runtime.rb:59:in `each'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/bundler-1.3.4/lib/bundler/runtime.rb:59:in `require'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/bundler-1.3.4/lib/bundler.rb:132:in `require'
from /home/ma/ts/config/application.rb:16:in `<top (required)>'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/commands.rb:53:in `require'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/commands.rb:53:in `block in <top (required)>'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/commands.rb:50:in `tap'
from /home/ma/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/commands.rb:50:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
我不知道我怎么能解决这个问题，让Rails服务器命令再次运行！ 任何帮助将不胜感激！
ps：请告诉我，如果我需要提供更多信息。谢谢。
您是否升级了Ruby？ –
是的！这是我做过的很多事情的开始！你认为这可能是原因吗？ 我会尝试重用旧版本并查看。如果这能解决它！ – Mawaheb
我在另一个线程上读到升级可能导致问题。如果您使用的是RVM，恢复应该很简单。 –