git.stubenhocker.tech has an A (IPv4) record (82.197.161.171) 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 git.stubenhocker.tech/82.197.161.171: Get "http://git.stubenhocker.tech/.well-known/acme-challenge/letsdebug-test": context deadline exceeded
Trace:
@0ms: Making a request to http://git.stubenhocker.tech/.well-known/acme-challenge/letsdebug-test (using initial IP 82.197.161.171)
@0ms: Dialing 82.197.161.171
@10000ms: Experienced error: context deadline exceeded
A test authorization for git.stubenhocker.tech to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
82.197.161.171: Fetching http://git.stubenhocker.tech/.well-known/acme-challenge/_ZMD3qchi7_EnbrQmopwtMxPD9ZdJPK-rPdfj8_B6t8: Timeout during connect (likely firewall problem)