DatatStore Failed Fetching Stats, why?

Hello! I am creating a currency system used in my Club Game, Club Void, and I was wondering as to why I am getting the failure to fetch print on my output? The error it brings is "GetASync is NOT a valid member of Global Data"

Here is an image of the failed output: https://gyazo.com/d23d2e045cc79e143a626e9c4f4d6033 Here is my code:

local dss = game:GetService("DataStoreService")
local mydatastore = dss:GetDataStore("mydatastore")

game.Players.PlayerAdded:Connect(function(player)
	local leaderstats = Instance.new("Folder")
	local vcash = Instance.new("IntValue")
    leaderstats.Name = "leaderstats"
    leaderstats.Parent = player
	vcash.Name = "VCash"
	vcash.Parent = leaderstats
	
	local data
	local success, errormessage = pcall(function()
		data = mydatastore:GetASync(player.UserId.."-VCash")
	end)
	if success then
		vcash.Value = data
	else
		print("Error Fetching Data!")
		warn(errormessage)
	end
end)

game.Players.PlayerRemoving:Connect(function(player)
	local success,  errormessage = pcall(function()
		mydatastore:SetASync(player.UserId.."-VCash",player.leaderstats.vcash.Value)
	end)
	if success then
		print("Stats Saved!")
	else
		print ("Saving Failed!")
		warn(errormessage)
	end
end)