title: AWS Cloud9: Cannot open environment
body: <p>I have created an environment in AWS Cloud9 with a Python Lambda function.
  This was working fine and for several days I was adding functionality.
  However one day the environment failed to open. After several minutes of loading it displayed an error message:</p>
  
  <blockquote>
    <p>This is taking longer than expected.
    If you think there might be an issue, contact AWS Support.
    It might be caused by VPC configuration issues.
    Please check documentation: 
    <a href="https://docs.aws.amazon.com/cloud9/latest/user-guide/vpc-settings.html?icmpid=docs_ac9_console" rel="nofollow noreferrer">https://docs.aws.amazon.com/cloud9/latest/user-guide/vpc-settings.html?icmpid=docs_ac9_console</a></p>
  </blockquote>
  
  <p>I looked at the suggested link, but I don't think the VPC is the issue. I didn't make any changes to it. Moreover I am able to make new environments and open them.</p>
  
  <p>Any ideas how to solve this?</p>