Data Store Not working(API services on), what am I doing wrong?

local DataStoreService = game:GetService("DataStoreService")
local myDataStore = DataStoreService:GetDataStore("myDataStore")

game.Players.PlayerAdded:Connect(function(player)
	
	local leaderstats = Instance.new("Folder")
	leaderstats.Name = "leaderstats"
	leaderstats.Parent = player
	
	local Cash = Instance.new("IntValue")
	Cash.Name = "Cash"
	Cash.Parent = leaderstats
	
	local playerUserId = "Player_"..player.UserId
	
	
	-- Load data
	local data
	local success, errormessage = pcall(function()
		 data = myDataStore:GetAsync(playerUserId)
	end)
	
	if success then
		Cash.Value = data 
	end	
	
end)

game.Players.PlayerRemoving:Connect(function(player)
	local playerUserId = "Player_"..player.UserId
	
	local data = player.leaderstats.Cash.Value
	
	local success, errormessage = pcall(function()
		myDataStore:UpdateAsync(playerUserId, data)
	end)
	
	if success then
		print("Data successfully saved!")
	else	
		warn("There was an error!")       ------
		error(errormessage)                   ------ These two are the lines I got the errormessage 
	end 

end)

Hello, I am quite new to DataStores.

I am having trouble with DataStores. I have researched and tried many different methods of Saving Data, However, none work for me. API services were turned on. When I test this in the server and update my Cash Value, it does not save.

In my Output box it says "Unable to cast value to function". Please Help me!