Fatal error: Uncaught Error: Interface "OCA\ServerInfo\OperatingSystems\IOperatingSystem" not found in /var/www/html/nextcloud/apps/serverinfo/lib/OperatingSystems/Dummy.php:12 Stack trace: #0 {main} thrown in /var/www/html/nextcloud/apps/serverinfo/lib/OperatingSystems/Dummy.php on line 12