I have a domain capitalzone.in and i am using letsencrypt for a long time on this. The cerificate expired on 28th and its not generating new SSL .. The log says } 2022-01-06 10:28:06,983EBUG:acme.client:Storing nonce: 000149VJZh8k3Lk6J5I1kpx_0mynd599JAfelSd-13Jyg0Y 2022-01-06 10:28:06,984:WARNING:certbot.auth_handler:Challenge failed for domain capitalzone.in 2022-01-06 10:28:06,984:INFO:certbot.auth_handler:http-01 challenge for capitalzone.in 2022-01-06 10:28:06,984EBUG:certbot.reporter:Reporting to user: The following errors were reported by the server: Domain: capitalzone.in Type: unauthorized Detail: Invalid response from http://capitalzone.in/.well-known/acme-challenge/yPV7TQYuNhbh5dN9hmfLYnCW4HWGxUW-qPmXDC2DqKU [18.104.22.168]: 404 To fix these errors, please make sure that your domain name was entered correctly and the DNS A/AAAA record(s) for that domain contain(s) the right IP address. 2022-01-06 10:28:06,985EBUG:certbot.error_handler:Encountered exception: Traceback (most recent call last): File "/opt/eff.org/certbot/venv/lib/python2.7/site-packages/certbot/auth_handler.py", line 91, in handle_authorizations self._poll_authorizations(authzrs, max_retries, best_effort) File "/opt/eff.org/certbot/venv/lib/python2.7/site-packages/certbot/auth_handler.py", line 180, in _poll_authorizations raise errors.AuthorizationError('Some challenges have failed.') AuthorizationError: Some challenges have failed.