Discover: Public key not found

Budgie Discover now comes with error Public key not found. whats up?

Not flatpak:

$ flatpak update
Looking for updates…

Info: runtime org.freedesktop.Platform branch 22.08 is end-of-life, with reason:
   org.freedesktop.Platform 22.08 is no longer receiving fixes and security updates. Please update to a supported runtime version.
Info: applications using this runtime:
   com.gitlab.davem.ClamTk

Info: runtime org.freedesktop.Platform.GL.default branch 22.08-extra is end-of-life, with reason:
   org.freedesktop.Platform 22.08 is no longer receiving fixes and security updates. Please update to a supported runtime version.
Info: applications using this extension:
   com.gitlab.davem.ClamTk

Info: runtime org.freedesktop.Platform.GL.default branch 22.08 is end-of-life, with reason:
   org.freedesktop.Platform 22.08 is no longer receiving fixes and security updates. Please update to a supported runtime version.
Info: applications using this extension:
   com.gitlab.davem.ClamTk

Nothing to do.