Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000] [2002] No connection could be made because the target machine actively refused it. ' in C:\xampp\htdocs\pustaka\vendor\yiisoft\yii2\db\Connection.php:600 Stack trace: #0 C:\xampp\htdocs\pustaka\vendor\yiisoft\yii2\db\Connection.php(600): PDO->__construct('mysql:host=loca...', 'root', '', NULL) #1 C:\xampp\htdocs\pustaka\vendor\yiisoft\yii2\db\Connection.php(542): yii\db\Connection->createPdoInstance() #2 C:\xampp\htdocs\pustaka\backend\controllers\LanguageController.php(31): yii\db\Connection->open() #3 C:\xampp\htdocs\pustaka\frontend\config\main.php(10): require('C:\\xampp\\htdocs...') #4 C:\xampp\htdocs\pustaka\index.php(13): require('C:\\xampp\\htdocs...') #5 {main} Next exception 'yii\db\Exception' with message 'SQLSTATE[HY000] [2002] No connection could be made because the target machine actively refused it. ' in C:\xampp\htdocs\pustaka\vendor\yiisoft\yii2\db\Connection.php:547 Stack trace: #0 C:\xampp\htdocs\pustaka\backend\controllers\ in C:\xampp\htdocs\pustaka\vendor\yiisoft\yii2\db\Connection.php on line 547