Unable to cast value to object in my teleport script?

Hi again i ran into another error in my teleporting script. This time it is unable to cast value to object. the error is at line 18. Heres the script.

while true do
local Teleporters = {}
local IsInTable = false
local TS = game:GetService("TeleportService")

local code = TS:ReserveServer(5970897194)

script.Parent.Touched:Connect(function(t)
	if t.Parent:FindFirstChild("Humanoid") then
		if IsInTable == true then return end
		table.insert(Teleporters,game.Players:FindFirstChild(t.Parent.Name))
		IsInTable = true
		for i = 10,0,-1 do
			script.Parent.BillboardGui.TextLabel.Text = i
			wait(1)
		end
			for i, v in pairs(Teleporters) do
			TS:TeleportToPrivateServer(5970897194,code,v)
			table.remove(Teleporters,v)
		end
		end
	end)
	wait()
end
wait()