Trying to pick a random player from server to become a hunter and getting confusing errors?

I need to pick a random player from the server and make them a hunter, but when I trigger this line of code I get an error like:

ServerScriptService.RoundSystem:106: invalid argument #2 to 'random' (interval is empty)

Here is the code:

local function teleportalltomap()
    wait_for_characters(players:GetPlayers()) -- call our function, passing all the players in the game
    print("All players' characters have loaded.")
    wait(2)
    local players = game.Players:GetChildren()
    local chosenhunter = players[math.random(1,#players)]
    print(chosenhunter)
    chosenhunter.Team = game.Teams.Hunters
    local propgun = game.ReplicatedStorage.PropGun:Clone()
    propgun.Parent = chosenhunter.Backpack
    huntercount.Value += 1
    chosenhunter.Character.HumanoidRootPart.CFrame = CFrame.new(maploc)

if someone can help me get rid of this error that would be awesome. Thanks!