PHP script '/home/farsbir2/domains/farsb.ir/public_html/wp-content/themes/isatis/functions.php' is protected by SourceGuardian and requires a SourceGuardian loader 'ixed.7.3.lin' to be installed.

1) Click here to download the required 'ixed.7.3.lin' loader from the SourceGuardian site
2) Install the loader to /usr/local/php73/lib/php/extensions/no-debug-non-zts-20180731
3) Edit /usr/local/php73/lib/php.ini and add 'extension=ixed.7.3.lin' directive
4) Restart the web server