Fatal error: Uncaught Error: Class "ilAbstractSearch" not found in /var/www/html/ilias/components/ILIAS/Search/classes/Like/class.ilLikeUserMultiFieldSearch.php:17 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Search/classes/Like/class.ilLikeUserMultiFieldSearch.php on line 17