farm.adventblocks.cc has an A (IPv4) record (91.244.197.115) but a request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address.
A timeout was experienced while communicating with farm.adventblocks.cc/91.244.197.115: Get "http://farm.adventblocks.cc/.well-known/acme-challenge/letsdebug-test": context deadline exceeded
Trace:
@0ms: Making a request to http://farm.adventblocks.cc/.well-known/acme-challenge/letsdebug-test (using initial IP 91.244.197.115)
@0ms: Dialing 91.244.197.115
@10000ms: Experienced error: context deadline exceeded
A test authorization for farm.adventblocks.cc to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
91.244.197.115: Fetching http://farm.adventblocks.cc/.well-known/acme-challenge/XML0Xpz5Hg1bYcbXR3B6pbhUccbRzYA6Z9qeY7-ze-U: Timeout during connect (likely firewall problem)