I want to make a script that if a part is not there the script will run. What did I do wrong?

The problem is at line 97

local Nothing = " "
local Text1 = "Welcome user."
local Text2 = "Now, you must be wondering how you got here."
local Text3 = "I will cover that later."
local Text4 = "But right now."
local Text5 = "You need to do this task."
local Text6 = "Get readdy."
local Text7 = "Alright."
local Text8 = "Do this parkour and get to the other side."
local Text9 = "Good."
local Dialog = script.Parent
local T8B = game.Workspace.T8B
local TransitionEvent = game.ReplicatedStorage.TransitionEvent
local player = game.Players.LocalPlayer
local tp1 = game.Workspace.TP1
function teleportPlayers(partCFrame)
    local players = game.Players:getPlayers()
    for _,player in pairs(players) do
        if player.Character then
            if player.Character.HumanoidRootPart.Anchored == false then
                player.Character.Humanoid.Jump = true
            end
        end
    end
    wait(.5)
    for _,player in pairs(players) do
        if player.Character then
            if player.Character.HumanoidRootPart.Anchored == false then
                player.Character:SetPrimaryPartCFrame(partCFrame)
            end
        end
    end
end


wait(2)
        for i = 1,#Text1 do
        Dialog.Text = string.sub(Text1,1,i)
        game.Workspace.T8B:Play()
                wait(0.09)
end 
wait(1)
        for i = 1,#Text2 do
        Dialog.Text = string.sub(Text2,1,i)
        game.Workspace.T8B:Play()
                wait(0.09)
end 
wait(2)
        for i = 1,#Text3 do
        Dialog.Text = string.sub(Text3,1,i)
        game.Workspace.T8B:Play()
                wait(0.09)
end 
wait(1)
for i = 1,#Text4 do
        Dialog.Text = string.sub(Text4,1,i)
        game.Workspace.T8B:Play()
                wait(0.09)
end 
wait(1)
for i = 1,#Text5 do
        Dialog.Text = string.sub(Text5,1,i)
        game.Workspace.T8B:Play()
                wait(0.09)
end 
wait(1)
for i = 1,#Text6 do
        Dialog.Text = string.sub(Text6,1,i)
        game.Workspace.T8B:Play()
                wait(0.09)
end 
wait(1)
for i = 1,#Nothing do
        Dialog.Text = string.sub(Nothing,1,i)
                wait(0.09)
end 
wait(5)
TransitionEvent:FireAllClients()
teleportPlayers(game.Workspace.TP1.CFrame)
for i = 1,#Text7 do
        Dialog.Text = string.sub(Text7,1,i)
        game.Workspace.T8B:Play()
                wait(0.09)
end 
wait(1)
for i = 1,#Text8 do
    Dialog.Text = string.sub(Text8,1,i)
    game.Workspace.T8B:Play()
                wait(0.09)
end 
wait(2)
for i = 1,#Nothing do
        Dialog.Text = string.sub(Nothing,1,i)
                wait(0.09)
end 
wait(1)
if not game.Workspace:FindFirstChild("NextLvl1") then
    for i = 1,#Text9 do
        Dialog.Text = string.sub(Text9,1,i)
        game.Workspace.T8B:Play()

                wait(0.09)
    end
end
wait(1)

It says no errors but the script does not work.