Fatal error: Uncaught Error: Class "OCP\Migration\SimpleMigrationStep" not found in /home/tzuovhm/tzuovhm/core/Migrations/Version20000Date20201109081919.php:16 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/core/Migrations/Version20000Date20201109081919.php on line 16