Fatal error: Uncaught Error: Class 'Illuminate\Support\ServiceProvider' not found in /data/htmlwww/common/cangmishu/src/app/Providers/BroadcastServiceProvider.php:15 Stack trace: #0 {main} thrown in /data/htmlwww/common/cangmishu/src/app/Providers/BroadcastServiceProvider.php on line 15