Tor Browser complains of potential security risk ahead for valid certificate, unable to accept risk and continue

Tor Browser version 10.0.10 on Manjaro Linux

When trying to visit a specific https:// site Tor Browser displays page "Warning: Potential Security Risk Ahead".

The links on this page, "Learn more…", "Go Back", do nothing. Clicking "Advanced" reveals another link "Accept the Risk and Continue" which does nothing.

In previous Tor Browser versions I was able to "Accept the Risk and Continue", but this no longer works.

Other browsers such as Firefox and Chromium do not complain about a potential security risk when visiting the same site.

The certificate appears valid an not self signed.