Listing out my repo keys, I can see that the sr_1.gpg key expired on 28/02/2024. Everything was working fine up to this point but now I can’t keep my 3 cuboxes patched properly.
/etc/apt/trusted.gpg.d/sr_1.gpg
-------------------------------
pub rsa3072 2022-02-28 [SC] [expired: 2024-02-28]
A693 71D5 5606 6B46 3B78 E35D CDEE C3F3 E207 C2D3
uid [ expired] SolidRun BSP Debian Signing Key #1 <support@solid-run.com>
It would be good to get this repo properly signed as, for me Debian 12 (Bookworm) works well. And it is the current stable.