Need Scripting help on roblox! -Murder game issues with teleporting players to map-?

I'm making a murder game and I have an error. 'Argument 1 Missing Or Nil' The error part is at the part where it teleports them to the map. I am an experienced Roblox scripter but I have never seen this error. If any of you know this error or know a fix please reply below with the fix. Hope you can help me with this!

Script:

local knife = game.ServerStorage:WaitForChild('Knife')
local gun = game.ServerStorage:WaitForChild('Revolver')
local status = game.ServerStorage:WaitForChild('Status').Value
local plrsneeded = 1
local stopgame = false
local gameon = false
local mapnames = {'Combat League By Parasc'}
local putmapsinworkspace = false
local Maps = game.ServerStorage:WaitForChild('Maps')
local MapFolder = game.Workspace:WaitForChild('Map')
local MapFound = false
local player1 = nil
local player2 = nil
local player3 = nil
local player4 = nil
local ranks = {'Murderer','Sheriff'}
local murderer = false
local sheriff = false
function RoundOver()
	game.SoundService.RoundOver:Play()
	status = 'Round Over!'
	wait(5)
	gameon = false
end

while true do
	if stopgame == false and gameon == false then
		gameon = true
		MapFound = false
		murderer = false
		sheriff = false
		player1 = nil
		player2 = nil
		player3 = nil
		player4 = nil
		status = 'Intermission'
		wait(35)
		status = 'Picking Map'
		local mapnamethatwaspicked = mapnames[math.random(1, #mapnames)]
		wait(4)
		status = 'Map Picked: '..mapnamethatwaspicked
		if putmapsinworkspace == true then
			local map = Maps:FindFirstChild(mapnamethatwaspicked)
			map.Parent = MapFolder
		elseif game.Workspace:FindFirstChild(mapnamethatwaspicked) or MapFolder:FindFirstChild(mapnamethatwaspicked) then
			MapFound = true
		end
		wait(3)
		if MapFound == true then
			status = 'Starting Round'
			game.SoundService.RoundStart:Play()
			wait(3)
			game.SoundService.RoundStart:Stop()
			game.SoundService.RoundStart:Play()
			wait(2.5)
			for i,v in pairs(game.Players:GetChildren()) do
				local rank = ranks[math.random(1, #ranks)]
				if rank == 'Murderer' and murderer == false then
					player1 = v.Name
					murderer = true
					knife:Clone().Parent = v.Backpack
				elseif rank == 'Sheriff' and sheriff == false then
					player2 = v.Name
					sheriff = true
					gun:Clone().Parent = v.Backpack
				else
					player3 = v.Name
				end
				end
--Heres the error \/
game.Workspace:FindFirstChild(player1).HumanoidRootPart.CFrame = CFrame.new(Vector3.new(MapFolder[mapnamethatwaspicked].Spawnpoint1.Position.Vector3))
game.Workspace:FindFirstChild(player2).HumanoidRootPart.CFrame = CFrame.new(Vector3.new(MapFolder[mapnamethatwaspicked].Spawnpoint2.Position.Vector3))
game.Workspace:FindFirstChild(player3).HumanoidRootPart.CFrame = CFrame.new(Vector3.new(MapFolder[mapnamethatwaspicked].Spawnpoint3.Position.Vector3))
--Error /\
				wait(60)
				game.Players:FindFirstChild(player1).Character.Humanoid.Health = 0
				game.Players:FindFirstChild(player2).Character.Humanoid.Health = 0
				game.Players:FindFirstChild(player3).Character.Humanoid.Health = 0
				RoundOver()
		else
			status = 'Failed to load map. (MAP NOT FOUND IN WORKSPACE)'
		end
	end
	
end


game.Players.Changed:Connect(function()
	if game.Players.NumPlayers == not plrsneeded then
		stopgame = true
		status = 'Not Enough Players (4 Needed) Or Round Just Ended'
	else
		stopgame = false
	end
end)

Thank you for reading, ChrisThrRoblox1234 (Chris) P.S. I would like this to be fixed quickly if possible!

Just to let you all know the error is at line 71 to line 73. The error is 'Argument 1 Missing Or Nil'. Those lines are the ones that are meant to teleport the player to some bricks in the map named: 'Spawnpoint1', 'Spawnpoint2', 'Spawnpoint3' and 'Spawnpoint4'. Also, some people are saying: 'This would not work, because you have never sat putmapsinworkspace to = true, its always false...'. It is false due to that there is only one map and there is no point in putting it in MapsFolder over and over again, it's pointless! So it is already in the folder - That's why its putmapsinworkspace = false! Now let me get to the last point, people are also saying that the players variable = nil! Its set to nil because it will set it to the players name when the round starts. (As seen on line 56 - 69). Also for some reason, the status is not changing (value and text)? Script in status text gui:

script.Parent.Text = game.ServerStorage.Status.Value

game.ServerStorage.Status.Changed:Connect(function()
	script.Parent.Text = game.ServerStorage.Status.Value
end)

Thank you for reading, Chris.