Fatal error: Uncaught Error: Class 'yii\web\Controller' not found in /var/www/uchetprosto.usa-ak.com/up/modules/chat_bot/controllers/MainController.php:18 Stack trace: #0 {main} thrown in /var/www/uchetprosto.usa-ak.com/up/modules/chat_bot/controllers/MainController.php on line 18