Fatal error: Uncaught PDOException: PDO::__construct(): php_network_getaddresses: getaddrinfo failed: 이름 혹은 서비스를 알 수 없습니다 in /home/kca21/public/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:38 Stack trace: #0 /home/kca21/public/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(38): PDO->__construct('mysql:host=db6....', 'kca21', 'kca21101&', Array) #1 /home/kca21/public/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOMySql/Driver.php(24): Doctrine\DBAL\Driver\PDOConnection->__construct('mysql:host=db6....', 'kca21', 'kca21101&', Array) #2 /home/kca21/public/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(362): Doctrine\DBAL\Driver\PDOMySql\Driver->connect(Array, 'kca21', 'kca21101&', Array) #3 /home/kca21/public/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(1853): Doctrine\DBAL\Connection->connect() #4 /home/kca21/public/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(1241): Doctrine\DBAL\Connection->getWrappedConnection() #5 /home/kca21/publ in /home/kca21/public/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php on line 112