Hi Gary, For what it's worth, I see the same error you see when I run
guix shell authenticator -- authenticator I'm using Guix System 2b1383c with GNOME as the desktop environment.
publickey - luis.felipe.la@protonmail.com - 0x12DE1598.asc
Description: application/pgp-keys
signature.asc
Description: OpenPGP digital signature
