Fatal error: Uncaught Error: Class "Orchestra\Testbench\TestCase" not found in E:\Ampps\www\CAS\vendor\laravel\ui\tests\AuthBackend\AuthenticatesUsersTest.php:0 Stack trace: #0 {main} thrown in E:\Ampps\www\CAS\vendor\laravel\ui\tests\AuthBackend\AuthenticatesUsersTest.php on line 0