Fatal error: Uncaught PDOException: PDO::__construct(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /var/www/html/vendor/yiisoft/yii2/db/Connection.php:722 Stack trace: #0 /var/www/html/vendor/yiisoft/yii2/db/Connection.php(722): PDO->__construct('mysql:host=ash-...', 'root', 'xZy4UwYXDw', NULL) #1 /var/www/html/vendor/yiisoft/yii2/db/Connection.php(637): yii\db\Connection->createPdoInstance() #2 /var/www/html/vendor/yiisoft/yii2/db/Connection.php(1067): yii\db\Connection->open() #3 /var/www/html/vendor/yiisoft/yii2/db/Connection.php(1054): yii\db\Connection->getMasterPdo() #4 /var/www/html/vendor/yiisoft/yii2/db/mysql/QueryBuilder.php(406): yii\db\Connection->getSlavePdo() #5 /var/www/html/vendor/yiisoft/yii2/db/mysql/QueryBuilder.php(430): yii\db\mysql\QueryBuilder->supportsFractionalSeconds() #6 /var/www/html/vendor/yiisoft/yii2/db/mysql/QueryBuilder.php(59): yii\db\mysql\QueryBuilder->defaultTimeTypeMap() #7 /var/www/html/vendor/yiisoft/yii2/base/BaseObject.php(109): yii\db\mysql\QueryBu in /var/www/html/vendor/yiisoft/yii2/db/Connection.php on line 648