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Revocation check via OCSP and CRL for 5f3vn0k4sg.iotrust.cn failed
Sorry, the request for 5f3vn0k4sg.iotrust.cn could not be completed...
We could not load the certificate for 5f3vn0k4sg.iotrust.cn, 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.