https://github.com/shiftkey/desktop/issues/642
hmmm, bit of arch error, but it’s seems org.freedesktop.secrets is provided by gnome keyring.
A bit of quick guess, but do you have that? gnupg: Gnome3 pinentry fails · Issue #112914 · NixOS/nixpkgs · GitHub
might have some clues, and it says you can debug dbus with
busctl monitor --user
which may or may not help you, but looks like fun.