Fatal error: Uncaught Error: Class "Office365\OneNote\OnenoteEntityHierarchyModel" not found in C:\xampp\htdocs\vendor\vgrem\php-spo\src\OneNote\Notebooks\Notebook.php:14 Stack trace: #0 {main} thrown in C:\xampp\htdocs\vendor\vgrem\php-spo\src\OneNote\Notebooks\Notebook.php on line 14