Fatal error: Uncaught Error: Class "ILIAS\Setup\AbstractOfFinder" not found in /var/www/html/ilias/components/ILIAS/Setup/src/UsageOfAttributeFinder.php:26 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Setup/src/UsageOfAttributeFinder.php on line 26