dna.engr.latech.edu has an A (IPv4) record (138.47.29.6) 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://dna.engr.latech.edu/.well-known/acme-challenge/letsdebug-test": read tcp 172.104.24.29:46976->138.47.29.6:80: read: connection reset by peer
Trace:
@0ms: Making a request to http://dna.engr.latech.edu/.well-known/acme-challenge/letsdebug-test (using initial IP 138.47.29.6)
@0ms: Dialing 138.47.29.6
@74ms: Experienced error: read tcp 172.104.24.29:46976->138.47.29.6:80: read: connection reset by peer
A test authorization for dna.engr.latech.edu to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
138.47.29.6: Fetching http://dna.engr.latech.edu/.well-known/acme-challenge/5blOFBZVVvXjjyx9j22C1-0JiX0Y0eQvn5pa-5xENwk: Connection reset by peer