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Firefox Quantum 58.0.1 (64-bit) will not open Google on my Mac?

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Google will no longer open on my Mac with Firefox Quantum. It says "Your Connection is not secure". When I click on the advanced button, it says this:

www.google.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be imported. Error code: SEC_ERROR_UNKNOWN_ISSUER

When I click on SEC_ERROR_UNKNOWN_ISSUER link it pops up this:

https://www.google.com/?gws_rd=ssl Peer’s Certificate issuer is not recognized. HTTP Strict Transport Security: false HTTP Public Key Pinning: true Certificate chain:

No where can I add an exception or do anything to get it to work. Any help will be much appreciated.

Google will no longer open on my Mac with Firefox Quantum. It says "Your Connection is not secure". When I click on the advanced button, it says this: www.google.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be imported. Error code: SEC_ERROR_UNKNOWN_ISSUER When I click on SEC_ERROR_UNKNOWN_ISSUER link it pops up this: https://www.google.com/?gws_rd=ssl Peer’s Certificate issuer is not recognized. HTTP Strict Transport Security: false HTTP Public Key Pinning: true Certificate chain: No where can I add an exception or do anything to get it to work. Any help will be much appreciated.