Fatal error: Uncaught Error: Class "ilCronJob" not found in /var/www/html/ilias/components/ILIAS/Authentication/classes/Cron/class.ilAuthDestroyExpiredSessionsCron.php:21 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Authentication/classes/Cron/class.ilAuthDestroyExpiredSessionsCron.php on line 21