What version of the game you are experiencing the issue with:
Season of Discovery

Describe the bug
Using aura filter seems to be broken, trying to set up an aura to be exluded doesn't do anything and gives an lua error.

To Reproduce
Go to Options and under "General Aura Filters" add "New Aura" with any ID and select Exluded on "Aura Filter".
Enter combat and apply the aura.

Expected behavior
Aura should excluded and without any lua errors.

Additional context
Here is the report from the BugSack addon.

678x NeatPlates/NeatPlatesCore.lua:1596: attempt to index global 'spellCCList' (a nil value)
[string "@NeatPlates/NeatPlatesCore.lua"]:1596: in function `?'
[string "@NeatPlates/NeatPlatesCore.lua"]:1450: in function <NeatPlates/NeatPlatesCore.lua:1448>

Locals:
self = "COMBAT_LOG_EVENT_UNFILTERED"
_ = 1727366950.953000
event = "SPELL_AURA_APPLIED"
_ = false
sourceGUID = "Player-5827-02704DCA"
sourceName = "Colibri"
sourceFlags = 1298
_ = 0
destGUID = "Creature-0-5209-229-12351-9693-0001F5806A"
destName = "Bloodaxe Evoker"
_ = 2632
_ = 0
spellID = 439471
spellName = "Sebacious Poison"
spellSchool = 8
plate = NamePlate5 {
driverFrame = NamePlateDriverFrame {
}
extended = Frame {
}
UpdateMe = false
showBlizzardPlate = false
namePlateUnitToken = "nameplate1"
template = "NamePlateUnitFrameTemplate"
UnitFrame = Button {
}
UpdateHealth = false
UpdateCastbar = true
carrier = NeatPlatesCarrier-1 {
}
}
ownerGUID = nil
unitType = "Player"
_ = "5827"
_ = "02704DCA"
_ = nil
_ = nil
creatureID = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = "attempt to index global 'spellCCList' (a nil value)"
PlatesByGUID =

The lua error should be fixed as of a few minutes ago. Could you check if the aura exclusion issues has been resolved along with it?

Confirmed no lua errors and auras are in fact being excluded correctly with latest version!