Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/kardi/public_html/vendor2523/ahsankhatri/firestore-php/tests/FirestoreDocumentTest.php:8 Stack trace: #0 {main} thrown in /home/kardi/public_html/vendor2523/ahsankhatri/firestore-php/tests/FirestoreDocumentTest.php on line 8