Why did teleportation to a secondary place of game fail?

I set up a system where when you walk into a box it is supposed to teleport you to a secondary place of the game, but when testing it just errored as shown below. I have attached pictures of the error from my developer account, and on an alt. If you would like to test this the game link is this.

Developer Account Error

Alt Account Error

This is the teleportation code:

local TpService = game:GetService("TeleportService")
local Players = game:GetService("Players"):GetPlayers()
local TeamService = game:GetService("Teams")
local TeleportService = game:GetService("TeleportService")

local timeUntilTp = game.ServerStorage.TimeUntilTeleport

local Gui = game.Workspace.HoldingChamber.HoldingChamberSpawn.BillboardGui.TextLabel

while wait(1) do
    if #TeamService.Waiting:GetPlayers() >= 1 then
        timeUntilTp.Value = 30

        wait()

        for i = timeUntilTp.Value, 1, -1 do
            timeUntilTp.Value = timeUntilTp.Value - 1
            Gui.Text = 'Teleporting in '..tostring(timeUntilTp.Value)..' seconds.'
            wait(1)
        end

        Gui.Text = 'Teleporting soon!'

        if #TeamService.Waiting:GetPlayers() >= 1 then
            local rs = TeleportService:ReserveServer(5890026222)
            local Players = game:GetService("Players"):GetPlayers()
            local playersToTp = TeamService.Waiting:GetPlayers()

            TeleportService:TeleportToPrivateServer(game.PlaceId,rs,playersToTp)
        end
    end
end

Thank you! Any help is greatly appreciated.