Obtaining certificate chain for sib98.isotop.ir, one moment while we download the sib98.isotop.ir certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for sib98.isotop.ir failed
Sorry, the request for sib98.isotop.ir could not be completed...
We could not load the certificate for sib98.isotop.ir, 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.