title: AWS Lambda Function URL error when submitting JSON request body: unreachable end point
body: <p>We enable the new Function URL feature for an AWS Lambda function.</p>
  <p>CORS is enabled. GET/POST/OPTIONS methods are allowed. The function is public -- no authorization required.</p>
  <p>Hitting the URL from the browser invokes the function.</p>
  <p>Hitting the URL from Postman with GET/POST invokes the function -- if you provide an empty request body.</p>
  <p>However, defining a JSON request body causes the same URL to be unreachable.</p>
  <p>Why?</p>