Fatal error: Uncaught Error: Class "Tests\TestCase" not found in /home/kartulirest/public_html/kartulirest.de/tests/Feature/OrderBalanceCheckoutTest.php:12 Stack trace: #0 {main} thrown in /home/kartulirest/public_html/kartulirest.de/tests/Feature/OrderBalanceCheckoutTest.php on line 12