Hello. I backup a vBulletin site on the cPanel and moved it to a VPS server. Required packages are installed. The files have been moved to the root directory of the Apache web server, and a backup of the database has been imported into MySQL. The permissions were checked and there was no problem, but when the site loads, it displays all the letters and characters as question marks. What could be the problem?

OS : CentOS 8
PHP : 7.2
Webserver : Apache
Database : MariaDB 10