PHP script '/home/nabsteel/domains/nabsteel.ir/public_html/landing/wp-content/plugins/revslider/abzarwp/abzarwp.php' is protected by SourceGuardian and requires a SourceGuardian loader 'ixed.7.4.lin' to be installed.

1) Download the required loader 'ixed.7.4.lin' from the SourceGuardian site: http://www.sourceguardian.com/loaders/download.php?php_v=7.4.33&php_ts=0&php_is=8&os_s=Linux&os_r=3.10.0-957.27.2.el7.x86_64&os_m=x86_64
2) Install the loader to /usr/local/php74/lib/php/extensions/no-debug-non-zts-20190902
3) Edit /usr/local/php74/lib/php.ini and add 'extension=ixed.7.4.lin' directive