Fatal error: Uncaught Error: Class "Orchestra\Testbench\TestCase" not found in C:\xampp\htdocs\demo_old\vendor\macellan\laravel-zip\tests\ZipTest.php:8 Stack trace: #0 {main} thrown in C:\xampp\htdocs\demo_old\vendor\macellan\laravel-zip\tests\ZipTest.php on line 8