TextLabel.Visible isn't working even if I tried toggling it manually?

Hey everyone,

I watched about 2 videos on YouTube about Typewriting Text and Cutscenes, but, everything was going alright when I wrote TextLabel.Visible = true. I already tried turning Visible on the TextLabel on and off manually, and that didn't do anything.

Here is my code:

local debounce = false
local textlabel = game.StarterGui.TextGui.TextLabel
local Text
local sfx
function soundeffect()
	sfx = game.Workspace.Sounds.DingVoiceSfx
	sfx:Play()
	coroutine.resume(coroutine.create(function()
	end))
end

local maketextwait_time = 0.04
function maketext(word)
	Text = word
	for i = 1, #Text do
		textlabel.Text = string.sub(Text,1,i)
		soundeffect()
		wait(maketextwait_time)
	end
end

local pf = game.Workspace.PartsForCutscene

local TweenService = game:GetService("TweenService")
local Camera = game.Workspace.CurrentCamera

local function MoveCamera(StartPart, EndPart, Duration, EasingStyle, EasingDirection)
	Camera.CameraType = Enum.CameraType.Scriptable
	Camera.CFrame = StartPart.CFrame
	local Cutscene = TweenService:Create(Camera, TweenInfo.new(Duration, EasingStyle, EasingDirection), {CFrame = EndPart.CFrame})
	Cutscene:Play()
	wait(Duration)
end


game.Workspace.Map.Secret.MainDoor.Touched:Connect(function(hit)
	if not debounce then
			debounce = true
			if hit.Parent.Name == "HairAccessory" then
				hit.Parent.Parent.HumanoidRootPart.Anchored = true
			end
			wait(2)
			local function Cutscene()
				MoveCamera(game.Workspace.Map.Secret.TeleportPart,pf.Part1,2,Enum.EasingStyle.Linear,Enum.EasingDirection.Out)
				wait(2)
				MoveCamera(pf.Part1,pf.Part2,2,Enum.EasingStyle.Linear,Enum.EasingDirection.Out)
			
				wait(.5)
				Camera.CameraType = Enum.CameraType.Custom
				Camera.CameraSubject = game.Players.LocalPlayer.Character.Humanoid
			end
			Cutscene()
			game.StarterGui.TextGui.TextLabel.Visible = true
			maketextwait_time = 2
			maketext("...")
			wait(10)
			hit.Parent.HumanoidRootPart.Anchored = false
		debounce = false
	end
end)

Is there anything wrong with the code or is it a Roblox Studio bug?