Warning: mysqli::__construct(): php_network_getaddresses: getaddrinfo for db failed: Name or service not known in /var/www/CAZyme3D/con.php on line 9

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for db failed: Name or service not known in /var/www/CAZyme3D/con.php:9 Stack trace: #0 /var/www/CAZyme3D/con.php(9): mysqli->__construct('db', 'cazyme_3d', Object(SensitiveParameterValue), 'cazyme3d') #1 /var/www/CAZyme3D/get_str_cluster.php(76): include('/var/www/CAZyme...') #2 {main} thrown in /var/www/CAZyme3D/con.php on line 9