Obtaining certificate chain for argon.material.tohoku.ac.jp, one moment while we download the argon.material.tohoku.ac.jp certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for argon.material.tohoku.ac.jp failed
Sorry, the request for argon.material.tohoku.ac.jp could not be completed...
We could not load the certificate for argon.material.tohoku.ac.jp, 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.