Fatal error: Uncaught Error: Class "Illuminate\Broadcasting\Channel" not found in C:\xampp\htdocs\adminlte3\vendor\laravel\framework\src\Illuminate\Broadcasting 2\PresenceChannel.php:5 Stack trace: #0 {main} thrown in C:\xampp\htdocs\adminlte3\vendor\laravel\framework\src\Illuminate\Broadcasting 2\PresenceChannel.php on line 5