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