I keep getting an Interval is empty error?

So this code seems to work just fine running it in Studio, But when I test it on the Client and Servers option it give me the error:

ServerScriptService.PlayerChooser:20: bad argument #2 to 'random' (interval is empty)

local vPlayers = game.Players.NumPlayers
local vPlayer = game.Players.LocalPlayer

    while wait(1) do
vPlayerAmount = {}

for _, vPlayer in pairs(game.Players:GetPlayers()) do

    if vPlayer and vPlayer.Character then
local vHumanoid = vPlayer.Character:WaitForChild("Humanoid")

    if vHumanoid and vHumanoid.Health > 0 then
        table.insert(vPlayerAmount, vPlayer)

        end
    end
end 
    if #vPlayerAmount <= 2 then

     vSimonP = vPlayerAmount[math.random(1, #vPlayerAmount)]

    if vSimonP then
    vSimonP.Team = game.Teams.Simon

            end
        end     
    end

I'm guessing it has to do with the table but i'm not sure what I should fix! Any help is appreciated!