Fatal error: Uncaught Error: Class "Laravel\BrowserKitTesting\TestCase" not found in C:\xampp\htdocs\cms-propay\vendor\encore\laravel-admin\tests\TestCase.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\cms-propay\vendor\encore\laravel-admin\tests\TestCase.php on line 9