Fatal error: Uncaught Error: Interface "OCP\IUserSession" not found in /home/tzuovhm/tzuovhm/nextcloud/apps/files_external/lib/Migration/DummyUserSession.php:12 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/nextcloud/apps/files_external/lib/Migration/DummyUserSession.php on line 12