Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/qwatr/public_html/quater/vendor/pusher/pusher-push-notifications/tests/PushNotificationsTest.php:4 Stack trace: #0 {main} thrown in /home/qwatr/public_html/quater/vendor/pusher/pusher-push-notifications/tests/PushNotificationsTest.php on line 4