pbx1.utbcloud.net has an A (IPv4) record (158.222.102.37) 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 pbx1.utbcloud.net/158.222.102.37: Get "http://pbx1.utbcloud.net/.well-known/acme-challenge/letsdebug-test": context deadline exceeded
Trace:
@0ms: Making a request to http://pbx1.utbcloud.net/.well-known/acme-challenge/letsdebug-test (using initial IP 158.222.102.37)
@0ms: Dialing 158.222.102.37
@10000ms: Experienced error: context deadline exceeded
A test authorization for pbx1.utbcloud.net to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
158.222.102.37: Fetching http://pbx1.utbcloud.net/.well-known/acme-challenge/Lfh-ZlrgDLW1FjuojsVuI51zIXkBo6lOKs9Q4yX9y-8: Timeout during connect (likely firewall problem)