Gamescript not working?

It was working before, but now I keep getting an error, "fullGui is not a member of playerGui"

--Made by Aceta

local players = game.Players:GetPlayers()
local timeleft = Workspace:findFirstChild('time')
local piece = Workspace.teleportationpart
local currentMap = Workspace.currentMap

function removeTime()
	for i = 120, 0, -1 do
		wait(1)
		timeleft.Value = i
	end
end

function gameStart()
	local players = game.Players:GetPlayers()
	for i = 1, #players do
		Spawn(function()
		local stats = players[i].PlayerGui.fullGui.everything.gamePlay.informer
		stats.Text = 'New round beginning!'
		stats.FontSize = 'Size24'
		timeleft.Value = 120
		wait(1)
		stats.Text = ''
		end)
	end
end

function teleportPlayers()
	local players = game.Players:GetPlayers()
	for i = 1, #players do
		Spawn(function()
		local piece = Workspace.teleportationpart
			players[i].Character.Torso.CFrame = CFrame.new(piece.Position+Vector3.new(
				math.random(1,15),
				math.random(2,6),
			math.random(1,15)))
			players[i].Character.Torso.Anchored = true
			end)
	end
end

function countdown()
	local players = game.Players:GetPlayers()
	for i = 1, #players do
		Spawn(function()
		players[i].NameDisplayDistance = 0
		players[i].HealthDisplayDistance = 0
		players[i].CameraMaxZoomDistance = 0.5
		local stats = players[i].PlayerGui.fullGui.everything.gamePlay.informer
		stats.Text = '3'
		wait(1)
		stats.Text = '2'
		wait(1)
		stats.Text = '1'
		wait(1)
		stats.Text = 'Begin!'
		stats.FontSize = 'Size48'
		wait(2)
		stats.Text = ''
		wait(1)
		stats.Text = 'Objective: Find a weapon.	'
		stats.FontSize = 'Size36'
		players[i].Character.Anchored = false
		end)
	end
end

function waitSome()
	local players = game.Players:GetPlayers()
	for i = 1, #players do
		Spawn(function()
		players[i].NameDisplayDistance = 100
		players[i].HealthDisplayDistance = 100
		players[i].CameraMaxZoomDistance = 400
		local stats = players[i].PlayerGui.fullGui.everything.gamePlay.informer
		stats.FontSize = 'Size24'
		stats.Text = "Let's take a quick break. Use this time to buy stuff in the shop!"
		wait(30)
		stats.Text = ''
		end)
	end
end

function endGame()
	local players = game.Players:GetPlayers()
	for i = 1, #players do
		Spawn(function()
		players[i]:LoadCharacter()
		end)
	end
	currentMap:ClearAllChildren()
end

function goAhead()
	local players = game.Players:GetPlayers()
		for i = 1, #players do
			Spawn(function()
			players[i].PlayerGui.fullGui.everything.gamePlay.informer.Text = 'We have enough players to start!'
			end)
		end
		wait(5)
end

function chooseMap()
	local maps = game.ServerStorage.Maps
	local clone = maps[math.random(1,#maps)]
	clone.Parent = currentMap
end

while wait() do
	if game.Players.NumPlayers >= 2 then
		goAhead()
		chooseMap()
		gameStart()
		teleportPlayers()
		countdown()
		removeTime()
		endgame()
		waitSome()
	else
		local players = game.Players:GetPlayers()
		for i = 1, #players do
			Spawn(function()
			players[i].PlayerGui.fullGui.everything.gamePlay.informer.Text = '2 players are needed to start! Invite a friend and we can begin.'
			end)
		end
	end
end

If you can tell me what the scripting if meant to do or what's it for I might be able to help.