Face the issue many time nginx reverse proxy server

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Requesting a certificate for amitmeshram.ml and www.amitmeshram.ml

Certbot failed to authenticate some domains (authenticator: nginx). The Certificate Authority reported these problems:
Domain: amitmeshram.ml
Type: dns
Detail: no valid A records found for amitmeshram.ml; no valid AAAA records found for amitmeshram.ml

Hint: The Certificate Authority failed to verify the temporary nginx configuration changes made by Certbot. Ensure the listed domains point to this nginx server and that it is accessible from the internet.

Some challenges have failed.
Ask for help or search for solutions at https://community.letsencrypt.org. See the logfile /var/log/letsencrypt/letsencrypt.log or re-run Certbot with -v for more details.

You have to set some DNS records for your amitmeshram.ml domain.

Unless you do that first, nobody will be able to visit your domain name and you won't be able to obtain a certificate.

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