Fatal error: Uncaught Error: Class "Microsoft\Graph\Generated\Models\Partners\Billing\Operation" not found in /var/www/usonboard.com/vendor/microsoft/microsoft-graph/src/Generated/Models/Partners/Billing/FailedOperation.php:10 Stack trace: #0 {main} thrown in /var/www/usonboard.com/vendor/microsoft/microsoft-graph/src/Generated/Models/Partners/Billing/FailedOperation.php on line 10