Problem with my fighting script? (#2)

local gui = game.Workspace.Part1.v.z

function Intermission()
	for i = 15, 0, -1 do
		gui.Text = "Intermission (0:"..i..")"
		if i <= 9 then
			gui.Text = "Intermission (0:0"..i..")"
		end
		wait(1)
	end
end

function ChooseDuelers_Teleport()
	gui.Text = "Now choosing dulers, (1 and 2)."
	wait(5)
	
	local plrs = game.Players:GetPlayers()
	local p1 = plrs[math.random(1, #plrs)]
	local p2 = plrs[math.random(1, #plrs)]
	
	repeat local p2 = plrs[math.random(1, #plrs)]
	until p2 ~= p1
	
	gui.Text = p1.Name.. " and " ..p2.Name.. " have been chosen."
	
	plrs[p1].Character:MoveTo(Vector3.new(147.5, 11.6, 15)) 
	plrs[p2].Character:MoveTo(Vector3.new(147.5, 11.6, -59))
	wait(5)
end

function Round()
	for i = 30, 0, -1 do
		gui.Text = "Round, please wait (0:"..i..")"
		if i <= 9 then
			gui.Text = "Round, please wait (0:0"..i..")"
		end
		wait(1)
	end
end

while true do
	if game.Players.NumPlayers > 1 then
		Intermission()
		ChooseDuelers_Teleport()
		Round()
	elseif game.Players.NumPlayers == 1 then
		gui.Text = "Waiting for 2 or more players."
	end
	wait()
end

Error: 16:57:19.327 - ServerScriptService.Script:26: attempt to index field '?' (a nil value) 16:57:19.328 - Stack Begin 16:57:19.329 - Script 'ServerScriptService.Script', Line 26 - global ChooseDuelers_Teleport 16:57:19.329 - Script 'ServerScriptService.Script', Line 44 16:57:19.329 - Stack End