Fatal error: Uncaught Error: Class "OCP\AppFramework\Controller" not found in /var/www/html/nextcloud/apps/bruteforcesettings/lib/Controller/IPWhitelistController.php:22 Stack trace: #0 {main} thrown in /var/www/html/nextcloud/apps/bruteforcesettings/lib/Controller/IPWhitelistController.php on line 22