Fixed production environment for advanced app

apps/advanced/environments/prod/common/config/params-local.php

 <?php
 return [
 	'components.db' => [
+		'class' => 'yii\db\Connection',
 		'dsn' => 'mysql:host=localhost;dbname=yii2advanced',
 		'username' => 'root',
 		'password' => '',
+		'charset' => 'utf8',
 	],
 ];