PHP script '/home/tablet/domains/tablet.ir/public_html/catalog/model/total/onecheckout_payment_fee.php' is protected by SourceGuardian and requires a SourceGuardian loader 'ixed.5.6.lin' to be installed.

1) Click here to download the required 'ixed.5.6.lin' loader from the SourceGuardian site
2) Install the loader to /usr/local/php56/lib/php/extensions/no-debug-non-zts-20131226
3) Edit /usr/local/php56/lib/php.ini and add 'extension=ixed.5.6.lin' directive
4) Restart the web server