Warning: PDO::__construct(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php on line 40

Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known' in /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:40 Stack trace: #0 /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(40): PDO->__construct('mysql:host=db;d...', 'wolnakoja', 'wolnakoja', Array) #1 /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOMySql/Driver.php(41): Doctrine\DBAL\Driver\PDOConnection->__construct('mysql:host=db;d...', 'wolnakoja', 'wolnakoja', Array) #2 /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(356): Doctrine\DBAL\Driver\PDOMySql\Driver->connect(Array, 'wolnakoja', 'wolnakoja', Array) #3 /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(680): Doctrine\DBAL\Connection->connect() #4 /var/www/html/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php(748): Doctrine\DBAL\Connection->executeQuery('SELECT t0.id AS...', A in /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php on line 40