Not found RVSiteBuilder CMS App in .:/opt/cpanel/ea-php80/root/usr/share/pear

Please contact your provider with info:
1. RVSitebuilder CMS App have not install.
2. Not found vendor path.
3. Your PHP version 8.0.30 not compatible, Our system require PHP 7.3-7.4

Please contact website admin to fix by solution.

Warning: PHP Startup: Unable to load dynamic library 'proc_open' (tried: /opt/cpanel/ea-php80/root/usr/lib64/php/modules/proc_open (/opt/cpanel/ea-php80/root/usr/lib64/php/modules/proc_open: cannot open shared object file: No such file or directory), /opt/cpanel/ea-php80/root/usr/lib64/php/modules/proc_open.so (/opt/cpanel/ea-php80/root/usr/lib64/php/modules/proc_open.so: cannot open shared object file: No such file or directory)) in Unknown on line 0

Deprecated: Directive 'allow_url_include' is deprecated in Unknown on line 0