Problem with my player choosing script?

local gui = game.StarterGui

local serverstorage = game:GetService("ServerStorage")

local agentsword = serverstorage:WaitForChild("AgentSword")
local assassainsword = serverstorage:WaitForChild("AssassainSword")
local bystandersword = serverstorage:WaitForChild("BystanderSword")

alive = {}
for _, player in pairs(game.Players:GetPlayers()) do
    table.insert(alive, player)
end

agent = alive[math.random(1, #alive)]
humanoid = agent:WaitForChild("Humanoid")

agent:MoveTo(game.Workspace.AgentSpawn.Position)

Error: ServerScriptService.MainScript:14: bad argument #2 to 'random' (interval is empty)