I am making a game that follows a tutorial is the code out of date? How would I fix it?

When the intermission ends it only teleports one of the two players onto the map, and the stops with the UI status being frozen at "Desert map selected"

(Code used)

-- Define variables

local ReplicatedStorage = game:GetService("ReplicatedStorage")

local ServerStorage = game:GetService("ServerStorage")

local MapsFolder = ServerStorage:WaitForChild("Maps")

local Status = ReplicatedStorage:WaitForChild("Status")

local GameLength = 50

local reward = 25

-- Game Loop

while true do

Status.Value = "Waiting for enough players"

repeat wait(1) until game.Players.NumPlayers >= 2

Status.Value = "Intermission"

wait(10)

local plrs = {}

for i, player in pairs(game.Players:GetPlayers()) do
	if player then
		table.insert(plrs,player) -- Add each player into plrs table
	end
end

wait(2)

local AvailableMaps = MapsFolder:GetChildren()

local ChosenMap = AvailableMaps[math.random(1,#AvailableMaps)]

Status.Value = ChosenMap.Name.." Chosen"

local ClonedMap = ChosenMap:Clone()
ClonedMap.Parent = workspace

-- Teleport players to the map

local SpawnPoints = ClonedMap:FindFirstChild("SpawnPoints")

if not SpawnPoints then
	print("Spawnpoints not found!")
end

local AvailableSpawnPoints = SpawnPoints:GetChildren()

for i, player in pairs(plrs) do
	if player then
		character = player.Character

		if character then
			-- Teleport them

			character:FindFirstChild("HumanoidRootPart").CFrame = AvailableSpawnPoints[1].CFrame
			table.remove(AvailableSpawnPoints,1)


			-- Give them a sword

			local Sword = ServerStorage.Sword:Clone()
			Sword.Parent = player.Backpack

			local GameTag = Instance.new("BoolValue")
			GameTag.Name = "GameTag"
			GameTag.Parent = player.Character

		else
			-- There is no character
			if not player then
				table.remove(plrs,i)
			end
		end
	end
end


Status.Value = "Get ready to play!"

wait(2)

for i = GameLength,0,-1 do

	for x, player in pairs(plrs) do
		if player then

			character = player.Character

			if not character then
				-- Left the game
			else
				if character:FindFirstChild("GameTag") then
					-- They are still alive
					print(player.Name.." is still in the game!")
				else
					-- They are dead
					table.remove(plrs,x)
					print(player.Name.." has been removed!")
				end
			end
		else
			table.remove(plrs,x)
			print(player.Name.." has been removed!")
		end
	end

	Status.Value = "There are "..i.." seconds remaining, and "..#plrs.." players left"

	if #plrs == 1 then
		-- Last person standing
		Status.Value = "The winner is "..plrs[1].Name
		plrs[1].leaderstats.Bucks.Value = plrs[1].leaderstats.Bucks.Value + reward
		break
	elseif #plrs == 0 then
		Status.Value = "Nobody won!"
		break
	elseif i == 0 then
		Status.Value = "Time up!"
		break
	end

	wait(1)
end

print("End of game")

for i, player in pairs(game.Players:GetPlayers()) do
	character = player.Character

	if not character then
		-- Ignore them
	else
		if character:FindFirstChild("GameTag") then
			character.GameTag:Destroy()
		end

		if player.Backpack:FindFirstChild("Sword") then
			player.Backpack.Sword:Destroy()
		end

		if character:FindFirstChild("Sword") then
			character.Sword:Destroy()
		end

	end

	player:LoadCharacter()
end

ClonedMap:Destroy()

Status.Value = "Game ended"

wait(2)

end

NumPlayers is not a property of "Players" instead use

local players = game.Players:GetPlayers()
local  num = #players