PHP script '/home/speedhost/public_html/includes/hooks/OnlineServerRegistrar_ShoppingCartValidateCheckout.php' is protected by SourceGuardian and requires a SourceGuardian loader 'ixed.7.3.' to be installed.

1) Click here to download the required 'ixed.7.3.' loader from the SourceGuardian site
2) Install the loader to /opt/cpanel/ea-php73/root/usr/lib64/php/modules
3) Edit /opt/cpanel/ea-php73/root/etc/php.ini and add 'extension=ixed.7.3.' directive
4) Restart the web server