Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000] [2002] No connection could be made because the target machine actively refused it. ' in F:\public\perpus\vendor\yiisoft\yii2\db\Connection.php:600 Stack trace: #0 F:\public\perpus\vendor\yiisoft\yii2\db\Connection.php(600): PDO->__construct('mysql:host=loca...', 'root', 'kartono2019', NULL) #1 F:\public\perpus\vendor\yiisoft\yii2\db\Connection.php(542): yii\db\Connection->createPdoInstance() #2 F:\public\perpus\backend\controllers\LanguageController.php(31): yii\db\Connection->open() #3 F:\public\perpus\frontend\config\main.php(10): require('F:\\public\\perpu...') #4 F:\public\perpus\index.php(13): require('F:\\public\\perpu...') #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 F:\public\perpus\vendor\yiisoft\yii2\db\Connection.php:547 Stack trace: #0 F:\public\perpus\backend\controllers\LanguageController.php(31): yii\db\Connection in F:\public\perpus\vendor\yiisoft\yii2\db\Connection.php on line 547