[ letsencrypt ]
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Attempting to parse the version 0.23.0 renewal configuration file found at /etc/letsencrypt/renewal/MyDomain.org.conf with version 0.10.2 of Certbot. This might not work.
Cert is due for renewal, auto-renewing...
Renewing an existing certificate
Performing the following challenges:
http-01 challenge for MyDomain.org
Using the webroot path /var/www/nextcloud for all unmatched domains.
Waiting for verification...
Cleaning up challenges
Failed authorization procedure. MyDomain.org (http-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: Fetching http://MyDomain.org/.well-known/acme-challenge/3q2VRSwkRT7HIOWV7nUlPkmbe94w-lpIRUqfCxigRHI: Timeout during connect (likely firewall problem)
IMPORTANT NOTES:
- The following errors were reported by the server:

Domain: MyDomain.org
Type: connection
Detail: Fetching
http://MyDomain.org/.well-known/acme-challenge/3q2VRSwkRT7HIOWV7nUlPkmbe94w-lpIRUqfCxigRHI:
Timeout during connect (likely firewall problem)

To fix these errors, please make sure that your domain name was
entered correctly and the DNS A 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.