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