Hi, I faced this issue as well. It seems to me that the problem comes from the fact that the updated global configuration or parsing thereof under `/etc/ fwupd/fwupd.conf` is invalid because some sections are empty, potentially making them just as absent from the parsing's perspective.
Another workaround, potentially more lightweight, is therefore to either add at least one benign configuration key and value in the `redfish` and `uefi_capsule` sections taken from the man page or the `*.conf.old` files of the same name, or to simply remove them entirely. Cheers, Paul.