Ruby中为何无法加载app.rb文件，出现LoadError错误？

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刚刚使用Capistrano部署了一个Ruby应用程序。我非常确定自己像往常一样做了操作。但是，服务器输出了以下错误内容：

cannot load such file -- app.rb (LoadError)config.ru:1:in 'require'config.ru:1:in 'block in main'/home/de

这个错误表明应用程序的`app.rb`文件无法被加载。请检查`app.rb`文件是否存在，并且路径是否正确。

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.

请改用config.ru中的以下内容

require "./app" run Sinatra::Application

这是路径问题