It says (in Portuguese) that the certificate expired today. I'm only getting to type this because "I accepted the risk".
Translating (with Google Translate, because I'm in a hurry):
Code: Select all
Alert: Potential security risk ahead
Firefox detected a problem and did not proceed to forum.librivox.org. The website was misconfigured or your computer's internal clock is wrong.
The site's certificate is probably expired, preventing Firefox from connecting securely. If you access this site, attackers may try to steal sensitive information such as passwords, emails, or credit card details.
What can you do about it?
The problem is most likely with the website, there is nothing you can do to fix it. You can notify the site administrator.
Know more…
Sites prove their identity through certificates, which are valid for a specified period of time. The forum.librivox.org certificate expired on 1/19/2022.
Error code: SEC_ERROR_EXPIRED_CERTIFICATE