Here's one (tell me if you want more) :

2x aux-addon/gui/core.lua:138: bad argument #1 to 'SetJustifyV' (Usage: self:SetJustifyV(justifyV))
[string "=[C]"]: in function SetJustifyV' [string "@aux-addon/gui/core.lua"]:138: in function create_tab'
[string "@aux-addon/frame.lua"]:10: in function `f'
[string "@aux-addon/aux-addon.lua"]:31: in function <aux-addon/aux-addon.lua:28>

Locals:
(*temporary) = FontString {
0 =
}
(*temporary) = "CENTER"

I opened a PR for this, looks like the new WoW for SoD needs the change to SetJustifyV to use middle opposed to center. The PR just cherry-picks the change that was done on the master branch to the classic-era one.

In the meantime you could locally change your addon files to match