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