Fatal error: Uncaught Error: Class "Tests\TestCase" not found in /home/startmine/api.startmine.info/vendor/imdhemy/google-play-billing/tests/DeveloperNotifications/Builders/DeveloperNotificationBuilderTest.php:14 Stack trace: #0 {main} thrown in /home/startmine/api.startmine.info/vendor/imdhemy/google-play-billing/tests/DeveloperNotifications/Builders/DeveloperNotificationBuilderTest.php on line 14