Fatal error: Uncaught Error: Class "ilButtonBase" not found in /var/www/html/ilias/components/ILIAS/UIComponent/SplitButton/classes/class.ilSplitButtonGUI.php:25 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/UIComponent/SplitButton/classes/class.ilSplitButtonGUI.php on line 25