Fatal error: Uncaught Error: Class "OC_Defaults" not found in /home/tzuovhm/tzuovhm/nextcloud/apps/theming/lib/ThemingDefaults.php:22 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/nextcloud/apps/theming/lib/ThemingDefaults.php on line 22