Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Broadcasting\ShouldBroadcast' not found in /home/noct-c/www/tanakahashi/vendor/laravel/framework/src/Illuminate/Notifications/Events/BroadcastNotificationCreated.php:10 Stack trace: #0 {main} thrown in /home/noct-c/www/tanakahashi/vendor/laravel/framework/src/Illuminate/Notifications/Events/BroadcastNotificationCreated.php on line 10