title: See actual response instead of "This request has no response data available"
body: <p>When there is something that fires <strong>Ajax</strong> or <strong>XHR Request</strong>, sometimes, if the <code>php</code> (or other server side script) has some fatal error, the <strong>Chrome</strong> browser returns such response:</p>
  
  <p><a href="https://i.stack.imgur.com/7dqHO.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7dqHO.png" alt="enter image description here"></a></p>
  
  <p>However, if we manually open that failing url, then the browser shows the output from that page (i.e. <code>Fatal error - $variable not defined</code> or whatever ).
  How to see that actual response message in chrome, instead of the <code>500 (Internal Server Error)</code> ?</p>