ServerScriptService.Game Logic:15: bad argument #2 (number expected, got table)????

For some reason the script:

for i, v in pairs(game.Players:GetPlayers()) do
	if not v:FindFirstChild("InMenu") then
		table:insert(contestants,v)

does not work the word: table is highlighted but the word insert isnt highlighted even though in the tutorial video im watching. it is highlighted. And whenever i load the game i get this error message:

18:27:46.776 - ServerScriptService.Game Logic:15: bad argument #2 (number expected, got table)

Does anyone know how to fix this?