PHP script '/home/arjanco/public_html/wp-content/plugins/Ultimate_VC_Addons/abzarwp/abzarwp.php' is protected by SourceGuardian and requires a SourceGuardian loader 'ixed.8.1.lin' to be installed.

1) Download the required loader 'ixed.8.1.lin' from the SourceGuardian site: http://www.sourceguardian.com/loaders/download.php?php_v=8.1.34&php_ts=0&php_is=8&os_s=Linux&os_r=4.18.0-553.111.1.lve.el7h.x86_64&os_m=x86_64
2) Install the loader to /opt/cpanel/ea-php81/root/usr/lib64/php/modules
3) Edit /opt/cpanel/ea-php81/root/etc/php.ini and add 'extension=ixed.8.1.lin' directive