DataStore Module Failure, store.stat function returning nil?

I have a Data Store module, that I writ myself, that goes like so:

local ds = game:GetService("DataStoreService")
local main = ds:GetDataStore("Main1")
local Auto_Index = 1.5 --// How many minutes until autosave
local data = {}

local store = {}

store.get = function(player)
	return main:GetAsync(player.userId)
end

store.save = function(player)
	local success,fail = pcall(function()
		main:SetAsync(player.userId,data[player])
	end)
	if success then
		return "success"
	else
		return "failed"
	end
end

store.setup = function(player)
	local current = store.get(player)
	
	if not current then
		data[player] = {["Coins"]=100,["Cube"]="Standard"}
		store.save(player)
	else
		data[player] = current
		store.save(player)
	end
end

store.change = function(player,stat,amount)
	data[player][stat] = data[player][stat]+amount
end

store.remove = function(player)
	data[player] = nil
end

store.autosave = function(player)
	local __index = Auto_Index*60
	
	spawn(function()
		local suc,err = pcall(function()
			while wait(__index) do
				store.save(player)
			end
		end)
		
		if not suc then
			warn("DATASTORE ERROR:",err)
		end
	end)
end

store.stats = function(player)
	return data[player]
end

store.set = function(player,stat,amount)
	
end

return store

Note the store.stats function

I called the store.stats function form a server script. It returned nil after previously returning the correct info.

game.Players.PlayerAdded:Connect(function(player)
	if player then
		local money = data.stats(player)		
		
		data.setup(player)
		data.autosave(player)
		
		local ls = Instance.new("Folder")
		ls.Name = "leaderstats"
		ls.Parent = player
		
		local m = Instance.new("NumberValue")
		m.Name = "Coins"
		m.Value = money["Coins"]
		m.Parent = ls	
		
		local c = Instance.new("StringValue")
		c.Value = money["Cube"]
		c.Name = "Cube"
		c.Parent = ls
		
		currentdata[player].Money = money["Coins"]
		currentdata[player].Cube = money["Cube"]
	end
end)

That is the function it is called from. It errors the first time it is called. Error: Attempt to index local 'money' (a nil value) I'm really confused as to why this happens, any help will be greatly appreciated.