Firefox says, in part:Your connection is not private. Attackers might be trying to steal your information from mail.google.com.... NET:ERR_CERT_AUTHORITY_INVALID
Centos 8Did Not Connect: Potential Security Issue Firefox detected a potential security threat and did not continue to mail.google.com because this website requires a secure connection. ... mail.google.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. ... The issue is most likely with the website, and there is nothing you can do to resolve it. ... Error code: SEC_ERROR_UNKNOWN_ISSUER
Firefox is supposedly up-to-date, per Help->About
Opera should be up-to-date.
Chrome should be, too.
Patches up to date.
Okay, so, what do I do? Is this my problem? gmail's? Firefox?
This is probably the wrong place for this post, but where else can I try? I reported this to CISA.