Try create a cert but comes Erro 1417

My domain is: mautic2.leoborlot.com.br

I ran this command: Creating/renewal mautic2.leoborlot.com.br certificates… (mautic2.leoborlot.com.br)

It produced this output:
2020-07-06 22:25:18,330:INFO:simp_le:1450: Generating new certificate private key
2020-07-06 22:25:22,416:ERROR:simp_le:1417: CA marked some of the authorizations as invalid, which likely means it could not access http://example.com/.well-known/acme-challenge/X. Did you set correct path in -d example.com:path or --default_root? Are all your domains accessible from the internet? Please check your domains’ DNS entries, your host’s network/firewall setup and your webserver config. If a domain’s DNS entry has both A and AAAA fields set up, some CAs such as Let’s Encrypt will perform the challenge validation over IPv6. If your DNS provider does not answer correctly to CAA records request, Let’s Encrypt won’t issue a certificate for your domain (see https://letsencrypt.org/docs/caa/). Failing authorizations: https://acme-v02.api.letsencrypt.org/acme/authz-v3/5708795015

Challenge validation has failed, see error log.
Debugging tips: -v improves output verbosity. Help is available under --help.

My web server is (include version): Docker - Nginx container for reverseproxy

Any one helpme please?

It might help to link to the Docker project that you are using, as there are hundreds of variations on Docker/nginx/reverse proxy out there.

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