title: AWS Developer Portal - TypeError: Failed to fetch
body: <p>I'm using the Developer Portal serverless application on AWS.  It talks to the AWS API Gateway and allows you to send requests to a published API based on info from the GW.  When I try to make calls, I get this error:</p>
  
  <p>TypeError: Failed to fetch</p>
  
  <p>Does anyone know where this comes from and how to troubleshoot Developer Portal?  </p>
  
  <p>Any suggestions welcome.</p>