Fatal error: Uncaught Error: Interface "ILIAS\COPage\Editor\Components\PageComponentModelProvider" not found in /var/www/html/ilias/components/ILIAS/COPage/PC/PlaceHolder/class.ilPCPlaceHolderModelProvider.php:22 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/COPage/PC/PlaceHolder/class.ilPCPlaceHolderModelProvider.php on line 22