在Rails应用程序中使用OmniAuth时为什么总是遇到Errno :: ETIMEDOUT

我有一个Rails虚拟应用程序，并且已将OmniAuth添加到我的Gemfile中. 我添加了

I have a rails dummy application, And I've add OmniAuth into my Gemfile. I've add

<%= link_to "Sign in with Twitter", "/auth/twitter" %>

在我的应用程序布局文件中.

in my application layout file.

我也将omniauth.rb文件添加到了config \ initializers文件夹中.

Also I've add the omniauth.rb file in my config\initializers folder.

Rails.application.config.middleware.use OmniAuth::Builder do
  provider :twitter, 'MYKEY', 'MYSECERT'
end

使用rails s重新启动Rails服务器并访问 http://localhost:3000/auth/twitter

After I restart of my rails server with rails s and visit http://localhost:3000/auth/twitter

我一直见过Errno::ETIMEDOUT，说Operation timed out - connect(2)

我的计算机可以同时访问Twitter网站.

My computer can visit Twitter website meanwhile.

有人可以帮助我这里出什么问题吗?非常感谢.

Can anyone help me what was going wrong here? Thank you very much.