Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Queue\ShouldQueue" not found in D:\xampp\htdocs\dropifypro\vendor\laravel\framework\src\Illuminate\Notifications\SendQueuedNotifications.php:14 Stack trace: #0 {main} thrown in D:\xampp\htdocs\dropifypro\vendor\laravel\framework\src\Illuminate\Notifications\SendQueuedNotifications.php on line 14