If your script
HTML tag has the type
attribute prepended with a hash, like <script type="ea10e272b0a1989fb2f3aa4e-text/javascript">...</script>
and you’re using Cloudflare services, then the root cause is the Cloudflare Rocket Loader, a feature of Cloudflare that optimizes the loading of JavaScript resources on your web pages.
Rocket Loader modifies the type
attribute of script
tags for website loading optimization by deferring the loading of JavaScript until after rendering. This modification can sometimes cause issues with HTML validation and Content Security Policy (CSP) headers.
Cloudflare Rocket Loader adds an argument “type” into the script
tag and causing issues with the W3C validator due to the “subtype missing” error.