Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/keshavvps/public_html/keshav/KG1/HAR/vendor/microsoft/microsoft-graph/tests/Functional/UserTest.php:8 Stack trace: #0 {main} thrown in /home/keshavvps/public_html/keshav/KG1/HAR/vendor/microsoft/microsoft-graph/tests/Functional/UserTest.php on line 8