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Revocation check via OCSP and CRL for mlmat.cz failed
Sorry, the request for mlmat.cz could not be completed...
We could not load the certificate for mlmat.cz, 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.