Fatal error: Uncaught Error: Class "Illuminate\Broadcasting\BroadcastEvent" not found in C:\xampp\htdocs\adminlte3\vendor\laravel\framework\src\Illuminate\Broadcasting\UniqueBroadcastEvent 2.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\adminlte3\vendor\laravel\framework\src\Illuminate\Broadcasting\UniqueBroadcastEvent 2.php on line 9