Fatal error: Uncaught Error: Class 'Opis\Closure\SerializableClosure' not found in D:\xampp\htdocs\vendor\laravel\framework\src\Illuminate\Queue\SerializableClosure.php:7 Stack trace: #0 {main} thrown in D:\xampp\htdocs\vendor\laravel\framework\src\Illuminate\Queue\SerializableClosure.php on line 7