Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Queue\ShouldBeUnique" not found in C:\xampp\htdocs\londoncityroom\vendor\laravel\framework\src\Illuminate\Contracts\Queue\ShouldBeUniqueUntilProcessing.php:5 Stack trace: #0 {main} thrown in C:\xampp\htdocs\londoncityroom\vendor\laravel\framework\src\Illuminate\Contracts\Queue\ShouldBeUniqueUntilProcessing.php on line 5