Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Broadcasting\Factory" not found in /var/www/html/usophy/vendor/laravel/framework/src/Illuminate/Broadcasting/BroadcastManager.php:23 Stack trace: #0 {main} thrown in /var/www/html/usophy/vendor/laravel/framework/src/Illuminate/Broadcasting/BroadcastManager.php on line 23