Obtaining certificate chain for shibata.classmethod.info, one moment while we download the shibata.classmethod.info certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for shibata.classmethod.info failed
Sorry, the request for shibata.classmethod.info could not be completed...
We could not load the certificate for shibata.classmethod.info, 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.