刚刚使用capistrano部署了一个ruby应用程序.我很确定我像往常一样做了一切.乘客虽然输出以下内容：
cannot load such file -- app.rb (LoadError)
config.ru:1:in `require'
config.ru:1:in `block in <main>'
/home/deploy/apps/blog/shared/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval'
/home/deploy/apps/blog/shared/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize'
config.ru:1:in `new'
config.ru:1:in `<main>'
/home/deploy/.rvm/gems/ruby-2.0.0-p353/gems/passenger-4.0.29/helper-scripts/rack-preloader.rb:108:in `eval'
/home/deploy/.rvm/gems/ruby-2.0.0-p353/gems/passenger-4.0.29/helper-scripts/rack-preloader.rb:108:in `preload_app'
/home/deploy/.rvm/gems/ruby-2.0.0-p353/gems/passenger-4.0.29/helper-scripts/rack-preloader.rb:153:in `<module:App>'
/home/deploy/.rvm/gems/ruby-2.0.0-p353/gems/passenger-4.0.29/helper-scripts/rack-preloader.rb:29:in `<module:PhusionPassenger>'
/home/deploy/.rvm/gems/ruby-2.0.0-p353/gems/passenger-4.0.29/helper-scripts/rack-preloader.rb:28:in `<main>'
**Application root**
/home/deploy/apps/blog/current
app.rb实际上在此目录中.
解决方法:
require "./app"
run Sinatra::Application
这是路径问题
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