Fatal error: Uncaught Error: Class "Microsoft\Graph\Core\Requests\BaseBatchRequestBuilder" not found in C:\xampp\htdocs\mflux\vendor\microsoft\microsoft-graph\src\BatchRequestBuilder.php:25 Stack trace: #0 {main} thrown in C:\xampp\htdocs\mflux\vendor\microsoft\microsoft-graph\src\BatchRequestBuilder.php on line 25