Critical error: Custom JavaScript is not allowed

The page includes this custom JS:

<script type="text/javascript" src="https://cdn.ywxi.net/js/1.js" async></script>

This is as noted in the AMP Validator: https://validator.ampproject.org/#url=http%3A%2F%2Fwww.techzai.com%2Fdownload-cracked-grt-dongle-v1-0-0-0%2Famp%2F

Custom JavaScript is not allowed in AMP. I

On your site, this may be getting injected at the web server layer and not by PHP (e.g. via a plugin): https://www.whitefirdesign.com/blog/2015/12/22/mcafee-and-pathdefender-shouldnt-be-making-it-easier-for-hackers-to-disguise-malicious-code/

You’ll need to remove it for the pages to be valid AMP.