Fatal error: Uncaught Error: Class "Illuminate\Broadcasting\Channel" not found in D:\Apache24\www\sx.nxytec.cn\xiansheng-api\vendor\laravel\framework\src\Illuminate\Broadcasting\PrivateChannel.php:7 Stack trace: #0 {main} thrown in D:\Apache24\www\sx.nxytec.cn\xiansheng-api\vendor\laravel\framework\src\Illuminate\Broadcasting\PrivateChannel.php on line 7