PHP script '/www/wwwroot/k55.net/application/index/controller/User.php' is protected by SourceGuardian and requires a SourceGuardian loader 'ixed.7.4.lin' to be installed.

1) Click here to download the required 'ixed.7.4.lin' loader from the SourceGuardian site
2) Install the loader to /www/server/php/74/lib/php/extensions/no-debug-non-zts-20190902
3) Edit /www/server/php/74/etc/php.ini and add 'extension=ixed.7.4.lin' directive
4) Restart the web server