I was asked to add this to this post. In my case it is about T430 Nitropad, I guess it is the same issue. If my guess will be confirmed, please update the title accordingly.
Error during upgrade to Heads 1.4:
T430 Nitropad (+Nitrokey Pro) upgrade from 1.3.1 to Heads 1.4 (forced to upgrade due to Qubes OS 4.1 → requires cryptsetup2 → requires coreboot 4.13).
Here, some screenshots with the system info and error message.
… I am limited to send only one image per post, so I have to drop picture one by one here.