Obtaining certificate chain for pubtalks.org, one moment while we download the pubtalks.org certificate and related intermediate certificates...
Refreshing certificate chain and revocation status for pubtalks.org, one moment while we re-check the pubtalks.org certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for pubtalks.org failed
Sorry, the request for pubtalks.org could not be completed...
We could not load the certificate for pubtalks.org, 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.