www.fleet.org has an A (IPv4) record (65.102.98.65) 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 www.fleet.org/65.102.98.65: Get http://www.fleet.org/.well-known/acme-challenge/letsdebug-test: context deadline exceeded
Trace:
@0ms: Making a request to http://www.fleet.org/.well-known/acme-challenge/letsdebug-test (using initial IP 65.102.98.65)
@0ms: Dialing 65.102.98.65
@10001ms: Experienced error: context deadline exceeded
A test authorization for www.fleet.org to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://www.fleet.org/.well-known/acme-challenge/1ptgOT8tuWbkaP-CRyxdG1L7SKBfXEgDQnm1jEvNxE0: Timeout during connect (likely firewall problem)