Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in D:\xampp\htdocs\bkash-control-panel\v-1.0\vendor\laravel\framework\src\Illuminate\Foundation\Testing\TestCase.php:8 Stack trace: #0 {main} thrown in D:\xampp\htdocs\bkash-control-panel\v-1.0\vendor\laravel\framework\src\Illuminate\Foundation\Testing\TestCase.php on line 8