PHP script '/home/kheshtir/domains/khesht.ir/public_html/administrator/components/com_rsform/helpers/fields/responsive/checkboxgroup.php' is protected by SourceGuardian and requires a SourceGuardian loader 'ixed.7.0.lin' to be installed.

1) Click here to download the required 'ixed.7.0.lin' loader from the SourceGuardian site
2) Install the loader to /usr/local/php70/lib/php/extensions/no-debug-non-zts-20151012
3) Edit /usr/local/php70/lib/php.ini and add 'extension=ixed.7.0.lin' directive
4) Restart the web server