Fatal error: Uncaught Error: Class "Opis\Closure\SerializableClosure" not found in I:\www\frameworks\Laravel\vendor\laravel\framework\src\Illuminate\Queue\SerializableClosure.php:7 Stack trace: #0 {main} thrown in I:\www\frameworks\Laravel\vendor\laravel\framework\src\Illuminate\Queue\SerializableClosure.php on line 7