Script is running faster than startergui can put gui inside player?

So I keep getting an error telling me "Main" is not part of the playergui. I added a line of code to the main script to tell it to wait until it is but it still gives me that error each time. Its like the script is running faster than the startergui can put the gui "Main" in the player

local PlayerBase = game:GetService("Players")
		PlayerBase.PlayerAdded:connect(function(PlayerUI)
	repeat wait() until PlayerUI.PlayerGui:WaitForChild("Main")
end)


--// Tables

winners = {}

--// Modules

Settings = require (script.Settings)

--// Game Variables

Intermission = Settings.Intermission
GameTime = Settings.GameTime

--// Functions

function ChangeText(Text)
	local Players = game.Players:GetPlayers()
	for i = 1, #Players do
		Players[i].PlayerGui.Main.Time.Text = Text
	end
end

function Winners(Text)
	local Players = game.Players:GetPlayers()
	for i = 1, #Players do
		Players[i].PlayerGui.Main.YouWin.Text = Text
	end
end

function GetMap()
	local Maps = game.ReplicatedStorage.Maps:GetChildren()
	local PickMap = math.random(1, #Maps)
	local SelectedMap = Maps[PickMap]:Clone()
	SelectedMap.Name = 'Map'
	SelectedMap.Parent = game.Workspace
end

function RemoveMap()
	if game.Workspace:FindFirstChild('Map') then
	   game.Workspace.Map:Remove()
	end
end

function Alive()
	local Players = game.Players:GetPlayers()
	for i = 1, #Players do
		Players[i].Alive.Value = true
	end
end

--// Main Script


game:GetService("Players").PlayerAdded:Connect(function(player)
	player.CharacterAdded:Connect(function(char)
		local hum = char:WaitForChild("Humanoid")
		hum.Died:Connect(function()
			if game.Workspace.GameActive.Value == true and player.Playing.Value == true then
			player.PlayerGui.Main.YouLose.Text = ('Darn! Try Again!')
			player.Alive.Value = false
			player.Playing.Value = false
			wait(1.5)
			player.PlayerGui.Main.YouLose.Text = ('')
			else
			player.Alive.Value = false
			player.Playing.Value = false
			end
		end)
	end)
end)

while true do
	
	for i = Intermission, 0, -1 do
		ChangeText('Intermission: ' ..i)
		wait(1)
	end
	
	local Players = game.Players:GetPlayers()
	for i = 1, #Players do
		Players[i].Playing.Value = true
	end
	
	Alive()
	wait()
	
	GetMap()
	wait()
	ChangeText('Loading Map')
	wait(1)
	ChangeText('Loading Map.')
	wait(1)
	ChangeText('Loading Map..')
	wait(1)
	ChangeText('Loading Map...')
	wait(2)
	ChangeText('Loaded')
	wait()
	
	game.Workspace.GameActive.Value = true
	
	local Players = game.Players:GetPlayers()
	for i = 1, #Players do
		if Players[i].Playing.Value == true and Players[i].Alive.Value == true then
			local Spawn = game.Workspace.Map.Spawns.Spawn
			Players[i].Character.HumanoidRootPart.CFrame = CFrame.new(Spawn.Position)
			Spawn:remove()
			Players[i].Character.Humanoid.WalkSpeed = 0
		end
	end
	
	for i = 5, 0, -1 do
	ChangeText('Game Starting In: ' ..i)
	wait(1)
	end
	
	local Players = game.Players:GetPlayers()
	for i = 1, #Players do
		if Players[i].Playing.Value == true then
			Players[i].Character.Humanoid.WalkSpeed = 16
		end
	end
	
	ChangeText('Begin!')
	game.Workspace.AllowEntry.Value = true
	wait(1)
	
	for i = GameTime, 0, -1 do
		ChangeText('Time Remaining: ' ..i)
		wait(1)
		ChangeText('GAME OVER')
	end
	
	
	local Players = game.Players:GetPlayers()
	for i = 1, #Players do
		if Players[i].Playing.Value == true and Players[i].Alive.Value == true then
		   table.insert(winners, 1, Players[i].Name)
		   Players[i].leaderstats.Coins.Value = Players[i].leaderstats.Coins.Value + 5
		   Players[i].leaderstats.Wins.Value = Players[i].leaderstats.Wins.Value + 1
		   Players[i].Character:BreakJoints()
		   Players[i].Playing.Value = false
		   Players[i].PlayerGui.Main.YouWin.Text = ('You Win! +5 Coins!')
		   wait(5)
		end
	end
	
	RemoveMap()
	game.Workspace.GameActive.Value = false
	game.Workspace.AllowEntry.Value = false
	for i,v in pairs (winners) do print(v) 
	end
	wait(4)
	
end