Im trying to do a updateServers script , and it does run but with an exception , why? (RE-ASK)

Hello , i have been creating a script builder , i made two places one for waiting and another to give the info that the servers will update... The problem i have is that when i try to give the request it doesn't work

Code of the request of updates

-- RemoteEvent will be called by a localscript
game.ReplicatedStorage.RemoteEvent.OnServerEvent:Connect(function(plr)
    print("Received request.")
    local data = game:GetService("DataStoreService")
    local startUpdate = data:GetDataStore("CENSORED")
    startUpdate:UpdateAsync("UPDTSRVS",function(old)
        local newValue = old
        newValue = newValue+1
        return newValue
    end)
end)

Code of the script that will action on update

local connection
function MessageToScreen(msg,isperm,waitt)
    local a = Instance.new("Message")
    a.Name = "ys27h872hs3gd7agd726ds8agwd972gdsga78wgd27d3"
a.Parent = workspace
    a.Text = msg
    if isperm == false then
        wait(waitt)
        a:remove()
    end
end
function UpdateServers(key)
    print("Starting..")
    MessageToScreen("Servers Are Updating , Please wait...",true,math.huge)
print("Teleporting")
    for i,v in pairs(game:GetService("Players"):GetPlayers()) do
        game:GetService("TeleportService"):Teleport(838000617,v)
    end
end
connection = startUpdate:OnUpdate("UPDTSRVS",UpdateServers)

I found out that this works , but when i join the game the connection runs , and i did not even change any value in DataStore.. Please help