title: message "Missing Authentication Token" - Custom Domain name for AWS API gateway
body: <p>I created an API with an invoke URL like this: https://[ID].execute-api.[region].amazonaws.com/[stage]/[get-path]
  and this invoke URL works and takes me to the Lambda function.</p>
  <p>Then I created a custom domain name like this api.example.com, which was registered in GoDaddy.
  In Endpoint Configuration, it gave me a new API Gateway Domain Name like this:
  [ID2].execute-api.[region].amazonaws.com, which I mapped as a CNAME in GoDaddy.</p>
  <p>When I go on [ID2].execute-api.[region].amazonaws.com on the browser, it says &quot;message: not found&quot;.</p>
  <p>And when I go on my custom domain api.example.com, it says &quot;message &quot;Missing Authentication Token&quot;&quot;</p>
  <p>Is the API Gateway domain name supposed to take me to the lambda function, and not display &quot;message not found&quot;?
  How do I get it to map properly to my custom domain in GoDaddy?</p>