Why Isn't my leaderstats saving script working? [sorry i fixed it im an idiot]

So I'm currently trying to make a save data system, but whenever I do it it comes up with the error "Argument 1 missing or nil" on line 7 anyway to fix this?

local ds = game:GetService("DataStoreService"):GetDataStore("SaveData")

game.Players.PlayerAdded:Connect(function(plr, leaderstats)

		local plrkey = "id_"..plr.userId
		local save1 = plr:WaitForChild(leaderstats).Defense
		local save2 = plr:WaitForChild(leaderstats).Power


		local GetSaved = ds:GetAsync(plrkey)
		if GetSaved then
			save1.Value = GetSaved[1]
			save2.Value = GetSaved[2]
		else
			local NumberForSaving = {save1.Value, save2.Value}
			ds:GetAsync(plrkey, NumberForSaving)
		end
	end)

	game.Players.PlayerRemoving:Connect(function(plr)
		ds:SetAsync("id_"..plr.userId, {plr.leaderstats.Defense.Value, plr.leaderstats.Power.Value})
	end)