nmpi.hbpneuromorphic.eu has an A (IPv4) record (148.187.149.91) 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://nmpi.hbpneuromorphic.eu/.well-known/acme-challenge/letsdebug-test": dial tcp 148.187.149.91:80: connect: connection refused
Trace:
@0ms: Making a request to http://nmpi.hbpneuromorphic.eu/.well-known/acme-challenge/letsdebug-test (using initial IP 148.187.149.91)
@0ms: Dialing 148.187.149.91
@97ms: Experienced error: dial tcp 148.187.149.91:80: connect: connection refused
A test authorization for nmpi.hbpneuromorphic.eu to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://nmpi.hbpneuromorphic.eu/.well-known/acme-challenge/PBHXso8olmb38RihCuG8s0R43G0XbJB-8nvyTC4V77g: Connection refused