Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/outlookforense/public_html/outlook/vendor/microsoft/microsoft-graph/tests/Http/GraphResponseTest.php:9 Stack trace: #0 {main} thrown in /home/outlookforense/public_html/outlook/vendor/microsoft/microsoft-graph/tests/Http/GraphResponseTest.php on line 9