ScreenGUI not visible after being cloned?

Hey! I am having trouble with my ScreenGUI not being visible after it is Cloned from ReplicatedStorage, I would like the GUI to be visible when the player is sitting down but for it to be deleted when the player stands up. Here is my code:

local Seat = game.Workspace.Nexus.Nexus:WaitForChild("Seat")

local player = game.Players.LocalPlayer

local gui = game.ReplicatedStorage.ScreenGui

local character = player.CharacterAdded:Wait()

local hum = character:WaitForChild("Humanoid")

hum.Seated:Connect(function(hit)
    print("Player detected on "..Seat.Parent.Name)
    local newGui = gui:Clone()
    newGui.Parent = game.StarterGui
    newGui.Frame.Active = true
    repeat wait() until not player.Character.Humanoid.Sit
    print("Player no longer detected on "..Seat.Parent.Name)
    wait(0.1)
    newGui:Destroy()
end)

And here is what happens:

https://imgur.com/a/akyBbob

Thanks!