letsencrypt 인증서 갱신 질문입니다. https 입니다.

금액을  드리더라도 해결하고 싶습니다

Saving debug log to /var/log/letsencrypt/letsencrypt.log

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Processing /etc/letsencrypt/renewal/www.sitedomain.com.conf
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Cert is due for renewal, auto-renewing...
Plugins selected: Authenticator webroot, Installer None
Renewing an existing certificate
Performing the following challenges:
http-01 challenge for sitedomain.com
http-01 challenge for m.sitedomain.com
http-01 challenge for www.sitedomain.com
Waiting for verification...
Challenge failed for domain sitedomain.com
Challenge failed for domain m.sitedomain.com
Challenge failed for domain www.sitedomain.com
http-01 challenge for sitedomain.com
http-01 challenge for m.sitedomain.com
http-01 challenge for www.sitedomain.com
Cleaning up challenges
Attempting to renew cert (www.sitedomain.com) from /etc/letsencrypt/renewal/www.sitedomain.com.conf produced an unexpected error: Some challenges have failed.. Skipping.
All renewal attempts failed. The following certs could not be renewed:
  /etc/letsencrypt/live/www.sitedomain.com/fullchain.pem (failure)

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** DRY RUN: simulating 'certbot renew' close to cert expiry
**          (The test certificates below have not been saved.)

All renewal attempts failed. The following certs could not be renewed:
  /etc/letsencrypt/live/www.sitedomain.com/fullchain.pem (failure)
** DRY RUN: simulating 'certbot renew' close to cert expiry
**          (The test certificates above have not been saved.)
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1 renew failure(s), 0 parse failure(s)

IMPORTANT NOTES:
 - The following errors were reported by the server:

   Domain: sitedomain.com
   Type:   connection
   Detail: Fetching
   http://www.sitedomain.com/.well-known/acme-challenge/DYUPmxiHs10v5thzxBgaY7_jC0x_EupSnzph8qeluN4:
   Error getting validation data

   Domain: m.sitedomain.com
   Type:   connection
   Detail: Fetching
   http://www.sitedomain.com/.well-known/acme-challenge/CWz5rIKuOVFBbYTB_Hmk8XxBdB5ZKTw-bk98Rp8J_9M:
   Error getting validation data

   Domain: www.sitedomain.com
   Type:   connection
   Detail: Fetching
   http://www.sitedomain.com/.well-known/acme-challenge/2IL646rd-Wy885gp0Cf1eAt5uRfNY9X6kIJGb6xYmTQ:
   Error getting validation data

   To fix these errors, please make sure that your domain name was
   entered correctly and the DNS A/AAAA record(s) for that domain
   contain(s) the right IP address. Additionally, please check that
   your computer has a publicly routable IP address and that no
   firewalls are preventing the server from communicating with the
   client. If you're using the webroot plugin, you should also verify
   that you are serving files from the webroot path you provided.
 

이렇게 나오는데요... 어떻게 해야하나요