Why does it say attempt to index nil with Clone on line 35?

local status = game.ReplicatedStorage.Status local maps = game.ReplicatedStorage.Maps:GetChildren()

while true do for i = 1,10 do status.Value = "Intermission "..10-i wait(1) end

local rand = math.random(1, #maps)

local map = maps[rand]:Clone()
map.Parent = workspace

status.Value = "We'll be playing "..map.Name
wait(4)

local players = game.Players:GetChildren()
for i = 1,#players do
	if players[i].Character ~= nil then
		local spawnLocation = math.random(1,#workspace.Teleports:GetChildren())
		players[i].Character:MoveTo(workspace.Teleports:GetChildren()[spawnLocation].Position)
		players[i].Character.Parent = workspace.Ingame
	end
end

local roundLength = 60
local canWin = true
local roundType = ""

if map:FindFirstChild("Obby") then
	roundType = "Obby"
	map.EndPart.Touched:Connect(function(hit)
		if hit.Parent:FindFirstChild("Humanoid") then
			canWin = false
			status.Value = hit.Parent.Name.." has won!"
		end
	end)
elseif map:FindFirstChild("Sword") then
	roundType = "Sword"
	
	local children = workspace.Ingame:GetChildren()
	for i = 1,#children do	
		map:FindFirstChildWhichIsA("Tool"):Clone().Parent = children[i] 
	end
	
	map:FindFirstChildWhichIsA("Tool"):Destroy()
end

repeat
	roundLength = roundLength -1
	status.Value = "Time Left: "..roundLength
	wait(1)
until roundLength == 0 or canWin == false or #workspace.Ingame:GetChildren() == 0 or (#workspace.Ingame:GetChildren() == 1 and roundType == "Sword")

if #workspace.Ingame:GetChildren() == 1 and roundType == "Sword" then
	status.Value = workspace.Ingame:FindFirstChildWhichIsA("Model").Name.. "has won!"
end

wait(3)
map:Destroy()

local players = game.Players:GetChildren()
for i = 1,#players do
	if players[i].Character ~= nil then
		players[i]:LoadCharacter()
	end
end

end~~~~~~~~~~~~~~~~~