An error with DataStore2

DataStore2OnUpdateBug.lua

local Players = game:GetService('Players')
local ReplicatedStorage = game:GetService('ReplicatedStorage')

local DataStore2 = require(ReplicatedStorage:WaitForChild('DataStore2'))

DataStore2.Combine('DATA', 'test')

Players.PlayerAdded:Connect(function(player)
	local store = DataStore2('test', player)

	store:OnUpdate(function(value)
		print('Store updated with new value: '..value)
	end)

	while true do
		store:Update(function(oldValue)
			oldValue = oldValue or 0
			
			print('Updating store. Old value was '..oldValue)
			return oldValue + 1
		end)
		
		wait(5)
	end
end)