Fatal error: Uncaught Error: Class "OCP\Migration\SimpleMigrationStep" not found in /var/www/html/nextcloud/apps/twofactor_totp/lib/Migration/Version010501Date20181018124436.php:17 Stack trace: #0 {main} thrown in /var/www/html/nextcloud/apps/twofactor_totp/lib/Migration/Version010501Date20181018124436.php on line 17