我要提前感谢您对我的帮助。我在这里发疯了，试图弄清楚phusion乘客或我的rails应用程序出了什么问题。
我已经做了很多谷歌搜索并阅读了 https://github.com/phusion/passenger/wiki/Debugging-application-startup-problems 上的所有内容，但我似乎仍然无法弄清楚问题是什么。
我已经包括了我认为问题所在的地方，但可以在 www.malikhandaan.com 访问完整的错误。
非常感谢您提前提供帮助。
（我是rails的新手，这是我第一次使用nginx部署应用程序）
-- Ruby level backtrace information ----------------------------------------
/usr/share/passenger/helper-scripts/rack-preloader.rb:28:in `<main>'
/usr/share/passenger/helper-scripts/rack-preloader.rb:29:in `<module:PhusionPassenger>'
/usr/share/passenger/helper-scripts/rack-preloader.rb:153:in `<module:App>'
/usr/share/passenger/helper-scripts/rack-preloader.rb:108:in `preload_app'
/usr/share/passenger/helper-scripts/rack-preloader.rb:108:in `eval' config.ru:1:in
`<main>' config.ru:1:in `new' /home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/rack-
1.5.2/lib/rack/builder.rb:55:in `initialize' /home/ubuntu/.rvm/gems/ruby-2.0.0-
p353/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval' config.ru:3:in `block in
<main>' config.ru:3:in `require'
/usr/share/nginx/www/malikhandaan/config/environment.rb:2:in `<top (required)>'
/usr/share/nginx/www/malikhandaan/config/environment.rb:2:in `require'
/usr/share/nginx/www/malikhandaan/config/application.rb:3:in `<top (required)>'
/usr/share/nginx/www/malikhandaan/config/application.rb:3:in `require'
/home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.2/lib/rails/all.rb:1:in `<top
(required)>' /home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/railties-
4.0.2/lib/rails/all.rb:1:in `require' /home/ubuntu/.rvm/gems/ruby-2.0.0-
p353/gems/railties-4.0.2/lib/rails.rb:9:in `<top (required)>'
/home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.2/lib/rails.rb:9:in `require'
/home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.2/lib/rails/application.rb:4:in
`<top (required)>' /home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/railties-
4.0.2/lib/rails/application.rb:4:in `require' /home/ubuntu/.rvm/gems/ruby-2.0.0-
p353/gems/railties-4.0.2/lib/rails/engine.rb:1:in `<top (required)>'
/home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.2/lib/rails/engine.rb:1:in
`require' /home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/railties-
4.0.2/lib/rails/railtie.rb:2:in `<top (required)>' /home/ubuntu/.rvm/gems/ruby-2.0.0-
p353/gems/railties-4.0.2/lib/rails/railtie.rb:2:in `require'
/home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/railties-
4.0.2/lib/rails/configuration.rb:3:in `<top (required)>' /home/ubuntu/.rvm/gems/ruby-
2.0.0-p353/gems/railties-4.0.2/lib/rails/configuration.rb:3:in `require'
/home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-
4.0.2/lib/active_support/core_ext/object.rb:11:in `<top (required)>'
/home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-
4.0.2/lib/active_support/core_ext/object.rb:11:in `require' /home/ubuntu/.rvm/gems/ruby-
2.0.0-p353/gems/activesupport-4.0.2/lib/active_support/core_ext/object/to_json.rb:3:in
`<top (required)>' /home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-
4.0.2/lib/active_support/core_ext/object/to_json.rb:3:in `require'
/home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/json-1.8.1/lib/json.rb:54:in `<top
(required)>' /home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/json-1.8.1/lib/json.rb:58:in
`<module:JSON>' /home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/json-1.8.1/lib/json.rb:58:in
`require' /home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/json-1.8.1/lib/json/ext.rb:9:in
`<top (required)>' /home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/json-
1.8.1/lib/json/ext.rb:12:in `<module:JSON>' /home/ubuntu/.rvm/gems/ruby-2.0.0-
p353/gems/json-1.8.1/lib/json/ext.rb:17:in `<module:Ext>' /home/ubuntu/.rvm/gems/ruby-
2.0.0-p353/gems/json-1.8.1/lib/json/common.rb:67:in `generator='
/home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/json-1.8.1/lib/json/common.rb:67:in `new'
/home/ubuntu/.rvm/gems/ruby-2.0.0-p353/gems/json-1.8.1/lib/json/common.rb:67:in
`initialize'
[NOTE] You may have encountered a bug in the Ruby interpreter or extension libraries.
Bug reports are welcome. For details: http://www.ruby-lang.org/bugreport.html
-----------------------------------------------------------------------
经过一整夜的研究和插件，我发现 ruby-2.0.0 似乎有这个错误，因为我降级到 ruby-1.9.3 问题解决了.....我从一个问题转移到另一个问题...至少我已经过了这个。:)
希望这对任何新手都有帮助。