Fatal error: Uncaught Error: Class "OCP\AppFramework\Controller" not found in /home/tzuovhm/tzuovhm/apps_/settings/lib/Controller/AISettingsController.php:18 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/apps_/settings/lib/Controller/AISettingsController.php on line 18