Fatal error: Uncaught Error: Class "Symfony\Component\HttpFoundation\JsonResponse" not found in C:\xampp\htdocs\adminlte3\vendor\laravel\framework\src\Illuminate\Http 2\JsonResponse.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\adminlte3\vendor\laravel\framework\src\Illuminate\Http 2\JsonResponse.php on line 12