centos 7

nginx version: nginx/1.18.0

I have been following this guide

https://www.mysterydata.com/how-to-install-ngx_pagespeed-with-nginx-cwp-vestacp-and-on-linux-os/

manage to get through to the last step.

i test it on one of my domain. insert the pagespeed at the domain vhost, restart nginx. i check using curl, the x-page-speed is not there.

try to put at another one of my domain, restart nginx. and now the domain produce error 500.

any idea why...