Fatal error: Uncaught Error: Class "OCP\Migration\SimpleMigrationStep" not found in /home/tzuovhm/tzuovhm/core/Migrations/Version24000Date20211230140012.php:18 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/core/Migrations/Version24000Date20211230140012.php on line 18