Fatal error: Uncaught Error: Class "OCP\Migration\SimpleMigrationStep" not found in /var/www/html/nextcloud/apps/files_downloadlimit/lib/Migration/Version000000Date20210910094923.php:18 Stack trace: #0 {main} thrown in /var/www/html/nextcloud/apps/files_downloadlimit/lib/Migration/Version000000Date20210910094923.php on line 18