How can I fix my data store, it wont work and dosen't leave a error?

After putting in the 2nd value (Bits) this data store just stopped working.

local DataStoreService = game:GetService("DataStoreService")
local DataStore = DataStoreService:GetDataStore("WinsBits")


game.Players.PlayerAdded:Connect(function(player)
	
	local leaderstats = Instance.new("Folder")
	leaderstats.Name = "leaderstats"
	leaderstats.Parent = player
	
	local Wins = Instance.new("IntValue")
	Wins.Name = "Wins"
	Wins.Parent = leaderstats
	
	local Bits = Instance.new("IntValue")
	Bits.Name = "Bits"
	Bits.Parent = leaderstats
	
	local playerUserId = "player_"..player.UserId
	
	local data 
	local success, errormessage = pcall(function()
		data = DataStore:GetAsync(playerUserId)
	end)
	
	if success then
		if data then
		Wins.Value = data.Wins
		Bits.Value = data.Bits
		end
		end
end)

game.Players.PlayerRemoving:Connect(function(player)
	local playerUserId = "player_"..player.UserId
	
	local data = {
		Wins = player.leaderstats.Wins.Value; 
		Bits = player.leaderstats.Bits.Value
	}
	
	
	local success, errormessage = pcall(function()
	DataStore:SetAsync(playerUserId, data)
	end)
	
	if success then 
		print("Data successfully saved!")
	else
		print("error occured")
		warn(errormessage)
	end
end)

Thanks in advance

You need to use a BindToClose function. The error you are having is most likely that the PlayerRemoving is never getting fired.