Fatal error: Uncaught Error: Class 'Illuminate\Broadcasting\Channel' not found in /opt/lampp/htdocs/kuesioner/vendor/laravel/framework/src/Illuminate/Broadcasting/PrivateChannel.php:5 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/kuesioner/vendor/laravel/framework/src/Illuminate/Broadcasting/PrivateChannel.php on line 5