How to fix this error?

I am trying fix this code but I get error severals time.

Here error:

14:29:55.826 - Workspace.Script:48: attempt to index a nil value 14:29:55.827 - Stack Begin 14:29:55.828 - Script 'Workspace.Script', Line 48 14:29:55.829 - Stack End

My script:

h = Instance.new("Hint", workspace)
 while true do
timer = 11
repeat
    timer = timer - 1
    h.Text = "Intermission("..timer..")"
    wait(1)
until timer == 0

local sword = game.Lighting:FindFirstChild("LinkedSword")
local players = game.Players:GetChildren()
local maps = math.random(1,4)
if maps == 1 then
h.Text = "Normal Sword Fight!"
game.Lighting.Map1:Clone().Parent = game.Workspace
for _,v in pairs (game.Players:GetPlayers()) do
v.Character:MoveTo(Vector3.new(-167, 40.9, 28.5))
end
local Search = game.Players:GetChildren()
for i = 1, #Search do
sword:Clone().Parent = Search[i].Backpack
end
wait(8)
game.Workspace.Map1:remove()
local Search1 = game.Players:GetChildren()
for i = 1, #Search1 do
Search1[i].Backpack:FindFirstChild("LinkedSword"):remove() 
end
end
for _,v in pairs (game.Players:GetPlayers()) do
v.Character:MoveTo(Vector3.new(-242, 158.5, 52))
end

if maps == 2 then
h.Text = "Windforce Battle!"
game.Lighting.Map2:Clone().Parent = game.Workspace
for _,v in pairs (game.Players:GetPlayers()) do
v.Character:MoveTo(Vector3.new(-0.5, 29.9, -87.5))
end
local Search = game.Players:GetChildren()
for i = 1, #Search do
sword:Clone().Parent = Search[i].Backpack
end
wait(8)
game.Workspace.Map2:remove()
local Search1 = game.Players:GetChildren()
for i = 1, #Search1 do
Search1[i].Backpack:FindFirstChild("LinkedSword"):remove() 
end
end
for _,v in pairs (game.Players:GetPlayers()) do
v.Character:MoveTo(Vector3.new(-242, 158.5, 52))
end
if maps == 3 then
h.Text = "Deadly Venom battle!"
game.Lighting.Map3:Clone().Parent = game.Workspace
for _,v in pairs (game.Players:GetPlayers()) do
v.Character:MoveTo(Vector3.new(98, 14.4, 146.5))
end
local Search = game.Players:GetChildren()
for i = 1, #Search do
sword:Clone().Parent = Search[i].Backpack
end
wait(8)
game.Workspace.Map3:remove()
local Search1 = game.Players:GetChildren()
for i = 1, #Search1 do
Search1[i].Backpack:FindFirstChild("LinkedSword"):remove() 
end
end
for _,v in pairs (game.Players:GetPlayers()) do
v.Character:MoveTo(Vector3.new(-242, 158.5, 52))
end
if maps == 4 then
h.Text = "Death Instant Battle!"
game.Lighting.Map4:Clone().Parent = game.Workspace
for _,v in pairs (game.Players:GetPlayers()) do
v.Character:MoveTo(Vector3.new(103, 1.5, -148)) 
end
local Search = game.Players:GetChildren()
for i = 1, #Search do
sword:Clone().Parent = Search[i].Backpack
end
wait(8)
game.Workspace.Map4:remove()
local Search1 = game.Players:GetChildren()
for i = 1, #Search1 do
Search1[i].Backpack:FindFirstChild("LinkedSword"):remove() 
end
end
for _,v in pairs (game.Players:GetPlayers()) do
v.Character:MoveTo(Vector3.new(-242, 158.5, 52))
end




end