Certbot failed to authenticate some domains

[sareeb94]

Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is: nb.dc-smarter.com

I ran this command: sudo certbot --nginx

It produced this output: Certbot failed to authenticate some domains (authenticator: nginx)

[MikeMcQ]

It would be helpful to see the whole error message.

And, given your Let's Debug test (https://letsdebug.net) looks good there is likely something unusual in your nginx config.

Can you upload the /var/log/letsencrypt/letsencrypt.log file? You need to copy it to a .txt file to use the upload button in the post menu.