Nah, they’re defaulted on these days.
Macros and Settings undefined/empty (I assume they fall under Config).
[added]
Looks like nameplateClassificationScale
might have been the culprit given the error line number.
https://github.com/Gethe/wow-ui-source/blob/live/Interface/AddOns/Blizzard_NamePlates/Blizzard_NamePlates.lua#L634
https://github.com/Gethe/wow-ui-source/blob/live/Interface/AddOns/Blizzard_NamePlates/Blizzard_NamePlates.lua#L513C8-L513C27