staging.website2022.hfm-nuernberg.de has an A (IPv4) record (141.75.87.40) 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 staging.website2022.hfm-nuernberg.de/141.75.87.40: Get "http://staging.website2022.hfm-nuernberg.de/.well-known/acme-challenge/letsdebug-test": context deadline exceeded
Trace:
@0ms: Making a request to http://staging.website2022.hfm-nuernberg.de/.well-known/acme-challenge/letsdebug-test (using initial IP 141.75.87.40)
@0ms: Dialing 141.75.87.40
@10000ms: Experienced error: context deadline exceeded