Obtaining certificate chain for ngb.schule, one moment while we download the ngb.schule certificate and related intermediate certificates...
Refreshing certificate chain and revocation status for ngb.schule, one moment while we re-check the ngb.schule certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for ngb.schule failed
Sorry, the request for ngb.schule could not be completed...
We could not load the certificate for ngb.schule, it might not exist or we could not reach the server, complete the TLS handshake, etc.
Revoked certificates can't and should not be trusted, these certificate will cause errors like "NET::ERR_CERT_REVOKED" in browsers and expose a security risk.