Android and Debian clients no longer work: Certificate issue

[wom-bat]

Describe the bug
Any attempt to connect to the Keybase.io API yields:
ERROR API network error: doRetry failed, attempts: 2, timeout 8m27s, last err: Post "https://api-1.core.keybaseapi.com/_/api/1.0/logdump/send.json": tls: failed to verify certificate: x509: certificate signed by unknown authority

Version on Linux is
6.4.0-20240821175720.3212f60cc5
Additional numbers
The number 345567

[wom-bat]

This seems magically to have been fixed overnight, without a new client?

[mathieujobin]

As of Jan 31st 2025, I have a "maybe similar" issue, I can't see the error.
works on Linux but my android app crash on open. I will try rebooting my phone.