Hey community! Any guide on this error, To which connection does this error refer to??

ERROR
agent
HTTPSConnectionPool(host='34.66.191.39', port=443): Max retries exceeded with url: /apis/batch/v1/namespaces/default/jobs (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x7f70cc17afd0>: Failed to establish a new connection: [Errno 111] Connection refused'))