Warning: mysqli::__construct(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /var/www/html/kartta/index2.php on line 4

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo failed: Name or service not known in /var/www/html/kartta/index2.php:4 Stack trace: #0 /var/www/html/kartta/index2.php(4): mysqli->__construct('docker-frontend...', 'finnmetko_', '!dfkjAj91JAScox...', 'wwwfinnmetkofi') #1 {main} thrown in /var/www/html/kartta/index2.php on line 4