Fatal error: Uncaught Error: Class 'Illuminate\Broadcasting\Channel' not found in /home/edmedu/www/hana-edu.co.kr/renew/vendor/laravel/framework/src/Illuminate/Broadcasting/EncryptedPrivateChannel.php:5 Stack trace: #0 {main} thrown in /home/edmedu/www/hana-edu.co.kr/renew/vendor/laravel/framework/src/Illuminate/Broadcasting/EncryptedPrivateChannel.php on line 5