I have problem on https://search.google.com/test/rich-results
When the files loaded with Cloudflare it will just showing error
my html is like this
<html lang="en"><head>
<title>test only</title>
</head>
<body>
<div id="a"></div>
<script src="js/a1.js"></script>
<script src="js/a2.js"></script>
<script src="js/a3.js"></script>
<script src="js/a4.js"></script>
<script src="js/a5.js"></script>
<script src="js/a6.js"></script>
<script src="js/a7.js"></script>
<script src="js/a8.js"></script>
<script src="js/a9.js"></script>
<script src="js/a10.js"></script>
<script src="js/a11.js"></script>
<script src="js/a12.js"></script>
<script src="js/a13.js"></script>
<script src="js/a14.js"></script>
<script src="js/a15.js"></script>
<script src="js/a16.js"></script>
<script src="js/a17.js"></script>
<script src="js/a18.js"></script>
<script src="js/a19.js"></script>
<script src="js/a20.js"></script>
</body></html>
on js/a1.js is simply like this
var a1= 'a1'; document.getElementById('a').innerHTML += a1 + '<br>'
for a2.js will be like this
var a2= 'a2'; document.getElementById('a').innerHTML += a2 + '<br>'
and so on
this is what i get
You can try on your server with file download here