Ruby on rails Capybara webkit:无法重置会话

我正在使用带capybara和ruby的capybara webkit进行这些测试。我有一个包含3个场景的功能文件。在第二个场景之后，它挂断并向我显示错误

 Request timed out after -1 second(s) (Capybara::Webkit::TimeoutError)
      /home/waqaslatif/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/capybara-webkit-1.11.1/lib/capybara/webkit/browser.rb:305:in `check'
      /home/waqaslatif/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/capybara-webkit-1.11.1/lib/capybara/webkit/browser.rb:211:in `command'
      /home/waqaslatif/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/capybara-webkit-1.11.1/lib/capybara/webkit/browser.rb:39:in `reset!'
      /home/waqaslatif/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/capybara-webkit-1.11.1/lib/capybara/webkit/driver.rb:264:in `reset!'
      /home/waqaslatif/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/capybara-2.7.1/lib/capybara/session.rb:109:in `reset!'
      /home/waqaslatif/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/capybara-2.7.1/lib/capybara.rb:331:in `block in reset_sessions!'
      /home/waqaslatif/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/capybara-2.7.1/lib/capybara.rb:331:in `reverse_each'
      /home/waqaslatif/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/capybara-2.7.1/lib/capybara.rb:331:in `reset_sessions!'
      /home/waqaslatif/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/capybara-2.7.1/lib/capybara/cucumber.rb:9:in `After' 

---

如果我分别运行这三个场景，那么所有场景都通过了。如何通过避免上述错误使它们一起运行

通过在配置中添加

config.skip\u image\u loading

，我能够解决这个问题