Sending an ACME HTTP validation request to jenkins-armv7.powerbang.ovh results in unexpected HTTP response 403 Forbidden. This indicates that the webserver is misconfigured or misbehaving.
403 Forbidden
<html><head><meta http-equiv='refresh' content='1;url=/login?from=%2F.well-known%2Facme-challenge%2Fletsdebug-test'/><script>window.location.replace('/login?from=%2F.well-known%2Facme-challenge%2Fletsdebug-test');</script></head><body style='background-color:white; color:white;'>
Authentication required
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-->
</body></html>
Trace:
@0ms: Making a request to http://jenkins-armv7.powerbang.ovh/.well-known/acme-challenge/letsdebug-test (using initial IP 91.86.133.221)
@0ms: Dialing 91.86.133.221
@101ms: Server response: HTTP 301 Moved Permanently
@101ms: Received redirect to https://jenkins-armv7.powerbang.ovh/.well-known/acme-challenge/letsdebug-test
@101ms: Dialing 91.86.133.221
@271ms: Server response: HTTP 403 Forbidden