Fatal error: Uncaught Error: Class "Tests\TestCase" not found in C:\xampp\htdocs\OneUI 5.12\03 OneUI Source (Laravel Starter Kit)\tests\Feature\ExampleTest.php:8 Stack trace: #0 {main} thrown in C:\xampp\htdocs\OneUI 5.12\03 OneUI Source (Laravel Starter Kit)\tests\Feature\ExampleTest.php on line 8