Fatal error: Uncaught Error: Class "ilAuthFrontendCredentials" not found in /var/www/html/ilias/components/ILIAS/CAS/classes/class.ilAuthFrontendCredentialsCAS.php:23 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/CAS/classes/class.ilAuthFrontendCredentialsCAS.php on line 23