Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Broadcasting\ShouldBroadcast' not found in /home/wwiwil/apps/iwill-laravel/app/Core/Api/Events/LessonsRealTime/ChangeStep.php:11 Stack trace: #0 {main} thrown in /home/wwiwil/apps/iwill-laravel/app/Core/Api/Events/LessonsRealTime/ChangeStep.php on line 11