attempt to call a table value error?

I am trying to get this part of my script to get all the players and randomize their teams, and spawn them into the game but I keep getting an error that says "attempt to call a table value" on line 6, I don't know why this is happening and couldn't find anything online about it, could someone please help?

while wait() do
	-------------- INSERT INTERMISSION MESSAGE HERE
	wait(10)
	--ROUND LOOP STARTS
	local playerlist = Spectators:GetPlayers()
	local player = playerlist(1, #playerlist)
	
	if player then
		if numberKiller == 0 then
			player.TeamColor = BrickColor.new("Really red")
				numberKiller = 1
					numberSpectators = numberSpectators - 1
			print(""..numberKiller.."")
			print(""..numberSpectators.."")
		else if player then
				player.TeamColor = BrickColor.new("Cyan")
					numberSurvivors = numberSurvivors + 1
						numberSpectators = numberSpectators - 1
				print(""..numberSurvivors.."")
				print(""..numberSpectators.."")
			end
		end
	end
	
	wait(3)
	for _, c in pairs(game.Players:GetChildren()) do
		local humanoid = c.Character:WaitForChild('Humanoid')
		humanoid.Health = 0
	end
	
end

(I cut off a large portion of the script as it is 100+ lines of code which I'm sure no one wants to read through)