Fatal error: Uncaught Error: Class "Symfony\Component\HttpFoundation\Request" not found in C:\xampp\htdocs\adminlte3\vendor\laravel\framework\src\Illuminate\Http 2\Request.php:23 Stack trace: #0 {main} thrown in C:\xampp\htdocs\adminlte3\vendor\laravel\framework\src\Illuminate\Http 2\Request.php on line 23