assigning 1 values to 2 values initalises extra variables error?

Im trying to make a purchase function for my store gui. the concept is buying animations / dances. and i get this error. "assigning 1 values to 2 values initalises extra variables with nil; add'nil' to value list to silence error"

function Database.OnInvoke(action,...)
	local vars = {...}
	if action:lower() == "get list" then
		return Store.List
	elseif action:lower() == "get packs" and (vars[1] and vars[1]:IsA("Player")) then
		local plr = vars[1]
		local packs,list = SData:GetAsync(plr.userId.."_Packs"),{}
		if not packs then SData:SetAsync(plr.userId.."_Packs",{}) packs = {} end
		for i,v in ipairs(packs) do
			table.insert(list,Store.List[Store:findIdByName(v)])
		end
		return list,packs
	elseif (action:lower() == "buy" or action:lower() == "purchase") and (vars[1] and vars[1]:IsA("Player")) and tonumber(vars[2]) then
		local bought = Store:Buy(vars[1],vars[2])
		return bought --Did the purchase go through?
	elseif action:lower() == "owns pack" and (vars[1] and vars[1]:IsA("Player")) and vars[2] then
		local plr,ok = vars[1]
		local packs = SData:GetAsync(plr.userId.."_Packs")
		if packs then
			for i,v in ipairs(packs) do
				if v:lower() == tostring(vars[2]):lower() then ok = true break end
			end
		end
		return ok
	end
end

function Database.Local.OnServerInvoke(plr,action,...)
	return Database:Invoke(action,plr,...)
end