oracle.fireballdev.tech has an A (IPv4) record (188.8.131.52) 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://oracle.fireballdev.tech/.well-known/acme-challenge/letsdebug-test": dial tcp 184.108.40.206:80: connect: no route to host
@0ms: Making a request to http://oracle.fireballdev.tech/.well-known/acme-challenge/letsdebug-test (using initial IP 220.127.116.11)
@0ms: Dialing 18.104.22.168
@90ms: Experienced error: dial tcp 22.214.171.124:80: connect: no route to host
A test authorization for oracle.fireballdev.tech to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
126.96.36.199: Fetching http://oracle.fireballdev.tech/.well-known/acme-challenge/IYwOPo7V0VW6-g1d28ca7WZnIk5dUaLD0a5hq3nS0Mg: Error getting validation data