Gives 522 response with wordpress URL appended with version

I am using Wordpress website via cloudflare. It is working fine but not loading the theme customizer.

I networks it gives 522 response for few javascript libraries to load.

For example below URL gives 522

Removing ver=5.3.2 from the URL is working fine but not working with ver string appended.

There are few other URLs of the plugins with ver= query which are loading successfully.

Works fine for me and at

Try clearing your browser cache.