My remote event script has errors but doesnt show them?

So I have scripts in my game that have's the client send over the fps every second to the server but it doesn't seem to work local script parent : replicatedfirst script parent : serverscriptservice local script :

local player = game.Players.LocalPlayer
local rstorage = game:GetService("ReplicatedStorage")
local event = rstorage:WaitForChild("Event")
local RunService = game:GetService("RunService")
local TimeFunction = RunService:IsRunning() and time or os.clock
local LastIteration, Start
local FrameUpdateTable = {}
local function HeartbeatUpdate()
    LastIteration = TimeFunction()
    for Index = #FrameUpdateTable, 1, -1 do
        FrameUpdateTable[Index + 1] = FrameUpdateTable[Index] >= LastIteration - 1 and FrameUpdateTable[Index] or nil
    end
    FrameUpdateTable[1] = LastIteration
    local fps = tostring(math.floor(TimeFunction() - Start >= 1 and #FrameUpdateTable or #FrameUpdateTable / (TimeFunction() - Start))) .. " FPS"
    Start = TimeFunction()
    RunService.Heartbeat:Connect(HeartbeatUpdate)
while wait(1) do

    event:FireServer(player,fps)
    end
    end

script :

local rstorage = game:GetService("ReplicatedStorage")
local event = rstorage:WaitForChild("Event")
event.OnServerEvent:Connect(function(player,fps)
    player.Character.Head.BillboardGui.Frame.Time.Text = tostring(fps)
end)

If someone could help I would appreciate it a lot!