Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/qwatr/public_html/quater/vendor/pusher/pusher-push-notifications/tests/UsersTest.php:5 Stack trace: #0 {main} thrown in /home/qwatr/public_html/quater/vendor/pusher/pusher-push-notifications/tests/UsersTest.php on line 5