将我的 rails 应用程序从升级3.1.10到3.2.0.
rails console开得很好。而且，我能够在控制台中执行代码。但是，当我rails server在browser. 它失败并显示以下错误。
SystemStackError（堆栈级别太深）：actionpack (3.2.21) lib/action_dispatch/middleware/reloader.rb:70
Rendered /home/sarwan/.rvm/gems/ruby-1.9.3-p551@project-name/gems/actionpack-3.2.21/lib/action_dispatch/middleware/templates/rescues/_trace.erb (0.8ms)
Rendered /home/sarwan/.rvm/gems/ruby-1.9.3-p551@project-name/gems/actionpack-3.2.21/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (0.7ms)
Rendered /home/sarwan/.rvm/gems/ruby-1.9.3-p551@project-name/gems/actionpack-3.2.21/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (13.8ms)
缓存读取：http://localhost:3000/favicon.ico ?
任何帮助将不胜感激。