Obtaining certificate chain for holidays.userv.csi.cam.ac.uk, one moment while we download the holidays.userv.csi.cam.ac.uk certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for holidays.userv.csi.cam.ac.uk failed
Sorry, the request for holidays.userv.csi.cam.ac.uk could not be completed...
We could not load the certificate for holidays.userv.csi.cam.ac.uk, 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.