Fatal error: Uncaught Error: Class "OCP\Migration\SimpleMigrationStep" not found in /home/tzuovhm/tzuovhm/nextcloud/core/Migrations/Version20000Date20201109081918.php:18 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/nextcloud/core/Migrations/Version20000Date20201109081918.php on line 18