Fatal error: Uncaught Error: Class "Illuminate\Broadcasting\BroadcastEvent" not found in /usr/www/unityweb/public/hms/vendor/laravel/framework/src/Illuminate/Broadcasting/UniqueBroadcastEvent.php:9 Stack trace: #0 {main} thrown in /usr/www/unityweb/public/hms/vendor/laravel/framework/src/Illuminate/Broadcasting/UniqueBroadcastEvent.php on line 9