oracle.fireballdev.tech has an A (IPv4) record (130.61.120.104) 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 130.61.120.104:80: connect: no route to host
Trace:
@0ms: Making a request to http://oracle.fireballdev.tech/.well-known/acme-challenge/letsdebug-test (using initial IP 130.61.120.104)
@0ms: Dialing 130.61.120.104
@86ms: Experienced error: dial tcp 130.61.120.104:80: 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.
130.61.120.104: Fetching http://oracle.fireballdev.tech/.well-known/acme-challenge/yWmzclJmBeVAFAsHgXp72Hcl-i8gFN7F5goRVrAMq-Q: Error getting validation data