Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Database\Query\Builder' not found in E:\xampp\htdocs\www\qr251\vendor\laravel\framework\src\Illuminate\Contracts\Database\Eloquent\Builder.php:12 Stack trace: #0 {main} thrown in E:\xampp\htdocs\www\qr251\vendor\laravel\framework\src\Illuminate\Contracts\Database\Eloquent\Builder.php on line 12