Bad Argument (Interval Is Empty)?

The code is for a hide n seek game and there is 2 scripts so far. Im having trouble with line 16. Here is the code, please help me and thanks. And if you need the other script as well it is below this one.

Server Main

local replicatedStorage = game:GetService("ReplicatedStorage")
local serverStorage = game:GetService("ServerStorage")

local status = replicatedStorage.Values.Status

local playersToStart = 1

local function chooseSeeker(availablePlayers)
    return availablePlayers[math.random(1, #availablePlayers)]
end

local function teleportPlayers(availablePlayers,spawns)
    for _, player in pairs(availablePlayers) do
        if player.Character then
            if player.Character:FindFirstChild("HumanoidRootPart") then
                player.Character.HumanoidRootPart.CFrame = spawns[math.random(1, #spawns)].CFrame + Vector3.new(0,5,0)
            end
        end
    end
end

while wait(1) do

    repeat

        print("Not enough players in game!")
        status.Value = playersToStart.." players needed to start (/"..playersToStart..")"

        wait(1)

    until #game.Players:GetPlayers() >= playersToStart

    for i = 5,0,-1 do
        status.Value = "Next round starts in "..i.." seconds"
        wait(0.1)

    end

    local contestants = game.Players:GetPlayers()

    local seeker = chooseSeeker(contestants)

    status.Value = "The chosen seeker is... "
    wait(1)
    status.Value = seeker.Name.."!"

    wait(3)

    local map = game.Workspace.Map1

    teleportPlayers(contestants,map.Spawns:GetChildren())

    wait(5)

end

Client Main

local replicatedStorage = game:GetService("ReplicatedStorage")
local serverStorage = game:GetService("ServerStorage")

local status = replicatedStorage.Values.Status

local timer = replicatedStorage.Values.Timer

local playersLeft = replicatedStorage.Values.PlayersLeft

local HUD = script.Parent
local statusFrame = HUD:WaitForChild("Status")
local playersLeftFrame = HUD:WaitForChild("PlayersLeft")

statusFrame.StatusTitle.Text = status.Value

status:GetPropertyChangedSignal("Value"):Connect(function()
    statusFrame.StatusTitle.Text = status.Value
    statusFrame.TimeLeft.Text = timer.Value
    playersLeftFrame.PlayersLeft.Text = playersLeft.Value
end)

timer:GetPropertyChangedSignal("Value"):Connect(function()
    statusFrame.TimeLeft.Text = timer.Value
end)

playersLeft:GetPropertyChangedSignal("Value"):Connect(function()
    playersLeftFrame.PlayersLeft.Text = playersLeft.Value
end)

Fxicity