Get certificate error

before i successfully get certificate from letsencrypt after solving fire wall problem , but i try to regenerate the certificate a gain i get the previous error ( Challenge failed for domain
http-01 challenge for
Cleaning up challenges
Some challenges have failed.


i used also sudo ./certbot-auto certonly --dry-run -d also i cant ping my AWS

any help please

Sorry, but to me it’s not so clear on how you expect us to help you. You already say you can’t see port 80 and 443 open through external test sites and you can’t ping your AWS server.

This community is there to help you with (Let’s Encrypt) certificates, with SSL/TLS issues and other stuff related to the HTTPS PKI. To me, this sounds more like a general server management issue, not really related to Let’s Encrypt, SSL/TLS or certificates?

But I could be wrong of course.

i solved it thansk for your kindly interest

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