Untitled

calculate# certbot certonly --webroot --webroot-path /var/calculate/www/acme -d example.org -d www.example.org
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator webroot, Installer None
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for example.org
http-01 challenge for www.example.org
Using the webroot path /var/calculate/www/acme for all unmatched domains.
Waiting for verification...
Challenge failed for domain example.org
Challenge failed for domain www.example.org
http-01 challenge for example.org
http-01 challenge for www.example.org
Cleaning up challenges
Some challenges have failed.

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

   Domain: example.org
   Type:   unauthorized
   Detail: Invalid response from
   http://example.org/.well-known/acme-challenge/QX5Z3vI90m6cwitxxoBx4y7Xwu5HW3Q_lvo_5b_yTJ4
   [2606:2800:220:1:248:1893:25c8:1946]: "<!doctype
   html>\n<html>\n<head>\n    <title>Example Domain</title>\n\n
   <meta charset=\"utf-8\" />\n    <meta http-equiv=\"Content-type"

   Domain: www.example.org
   Type:   unauthorized
   Detail: Invalid response from
   http://www.example.org/.well-known/acme-challenge/9CELAJQgE_eyaT-XzmNrb_E4ZzlXNF6aQDBGDCFy52E
   [2606:2800:220:1:248:1893:25c8:1946]: "<!doctype
   html>\n<html>\n<head>\n    <title>Example Domain</title>\n\n
   <meta charset=\"utf-8\" />\n    <meta http-equiv=\"Content-type"

   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.