Determine the minimum PHP version required by the software (e.g., PHP ≥ 7.4). This is usually indicated in the documentation or error message. Check the current PHP version on your server: ```bash php -v ``` In cPanel, go to Select PHP Version and choose the appropriate version (e.g., PHP 7.4 or 8.0). Ensure that all required extensions (openssl, gd, mbstring, pdo_mysql, etc.) are enabled. Save changes and, if necessary, restart PHP-FPM or Apache/Nginx: ```bash sudo systemctl restart php7.4-fpm sudo systemctl restart apache2 # or nginx ```