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