An unexpected error occurred:
There were too many requests of a given type :: Error creating new cert :: Too many certificates already issued for exact set of domains: aginet.kr,www.aginet.kr
Please see the logfiles in /var/log/letsencrypt for more details.
IMPORTANT NOTES:
If you lose your account credentials, you can recover through
e-mails sent to sk20031@live.co.kr.
Your account credentials have been saved in your Certbot
configuration directory at /etc/letsencrypt. You should make a
secure backup of this folder now. This configuration directory will
also contain certificates and private keys obtained by Certbot so
making regular backups of this folder is ideal.
What is the command you’re running right now? It looks like you have succeeded in generating certificates for these names, several times in fact! (You can see them in the certificate transparency logs). You’re hitting a rate limit because you’ve issued so many certificates already. See our rate limit documentation for more information.