Hi there,
I've been getting this error a lot since I started using the three resource trackers posted here: https://wago.io/p/Rabble

[string "--[[ Error in 'Mana Regen' ]] return functi..."]:5: attempt to compare nil with number
[C]: in function `xpcall'

WeakAuras\GenericTrigger.lua:512: in function <WeakAuras\GenericTrigger.lua:505>

WeakAuras\GenericTrigger.lua:636: in function `ScanUnitEvents'

WeakAuras\GenericTrigger.lua:776: in function <WeakAuras\GenericTrigger.lua:773>

It only seems to happen for a bit after /reloadui. Is this an error on my behalf?

Also, thank you so much for WA2 and continuing to support it!

The link you posted doesn't go the aura, but from the error message it's clear that it's a bug in the aura you imprtet and that you need to contact the author. Or if they don't respond, seek help in our discord.