unifi.avsion.com.au has an A (IPv4) record (122.106.37.27) 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.
Get http://unifi.avsion.com.au/.well-known/acme-challenge/letsdebug-test: dial tcp 122.106.37.27:80: connect: no route to host
Trace:
@0ms: Making a request to http://unifi.avsion.com.au/.well-known/acme-challenge/letsdebug-test (using initial IP 122.106.37.27)
@0ms: Dialing 122.106.37.27
@7343ms: Experienced error: dial tcp 122.106.37.27:80: connect: no route to host
A test authorization for unifi.avsion.com.au to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://unifi.avsion.com.au/.well-known/acme-challenge/2CLnjGHQAHzRXT_7yEyr2ehGFXZi425buQWUQXfRWtI: Error getting validation data
Requests made to the domain
Request to: unifi.avsion.com.au/122.106.37.27, Result: [Address Type=IPv4,Server=,HTTP Status=0], Issue: ANotWorking
Trace:
@0ms: Making a request to http://unifi.avsion.com.au/.well-known/acme-challenge/letsdebug-test (using initial IP 122.106.37.27)
@0ms: Dialing 122.106.37.27
@7343ms: Experienced error: dial tcp 122.106.37.27:80: connect: no route to host
A and AAAA records found for this domain
unifi.avsion.com.au. 0 IN A 122.106.37.27
Challenge update failures for unifi.avsion.com.au in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/25920723
acme: error code 400 "urn:ietf:params:acme:error:connection": Fetching http://unifi.avsion.com.au/.well-known/acme-challenge/2CLnjGHQAHzRXT_7yEyr2ehGFXZi425buQWUQXfRWtI: Error getting validation data
The IANA public suffix is the TLD of the Registered Domain
The TLD for unifi.avsion.com.au is: com.au
The current status.io status for Let's Encrypt
Operational