Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Queue\ShouldQueue' not found in C:\xampp\htdocs\admin\vendor\laravel\framework\src\Illuminate\Queue\CallQueuedClosure.php:13 Stack trace: #0 {main} thrown in C:\xampp\htdocs\admin\vendor\laravel\framework\src\Illuminate\Queue\CallQueuedClosure.php on line 13