Software fails to show unhandled error from fwupd

I'm running Fedora 37 Silverblue. GNOME Software showed an UEFI update on the Update screen, but when I clicked 'Update', nothing happened. GNOME Software started from Terminal printed this out:

09:18:24:441 Gs not handling error failed for action update: Blocked executable in the ESP, ensure grub and shim are up to date: /boot/efi/EFI/BOOT/BOOTX64.EFI Authenticode checksum [0ce02100f67c7ef85f4eed368f02bf7092380a3c23ca91fd7f19430d94b00c19] is present in dbx

It's apparently an unhandled error. In such a case Software should give the user a hint that there is an error in the firmware update process and it's not just a broken UI like it seems at first.