TFS 1.X+ Boss script getSpectators error

[undead mage]

So im trying to make a boss script that when you use the lever you and your team will get teleported into the boss room and get 5 minutes to kill it before getting teleported out. Im not done yet the level requirement and the minimum of 5 players seem to work but im getting errors when checking if a team is already inside. I just can't figure out why it's giving me a nil value error.

attempt to index a nil value
stack traceback:
[C]: at 0x7ff6b82e3c60
[C]: in function 'getSpectators'

local bossConfig = {
    [34001] = {  -- ActionID
        requiredLevel = 100,

        centerRoomPosition = Position(175, 508, 11),
        northRange = 10, eastRange = 10, southRange = 10, westRange = 10,

        playerPositions = {
        Position(165, 532, 11),
        Position(165, 533, 11),
        Position(165, 534, 11),
        Position(165, 535, 11),
        Position(165, 536, 11)
        }
    }
}

function onUse(player, item, fromPosition, target, toPosition, isHotkey)
    if item.itemid == 9826 then
        local storePlayers, playerTile = {}

    local info = bossConfig[item:getActionId()]
    if not info then
        return false
    end

        for i = 1, #info.playerPositions do
            playerTile = Tile(info.playerPositions[i]):getTopCreature()
            if not playerTile or not playerTile:isPlayer() then
                player:sendTextMessage(MESSAGE_STATUS_SMALL, "You need 5 players.")
                return true
            end

            if playerTile:getLevel() < info.requiredLevel then
                player:sendTextMessage(MESSAGE_STATUS_SMALL, "All the players need to be level ".. config.requiredLevel .." or higher.")
                return true
            end     

            storePlayers[#storePlayers + 1] = playerTile
        end

    local spectators = Game.getSpectators(info.centerRoomPosition, false, false, info.westRange, info.eastRange, info.northRange, info.southRange)
    for i = 1, #spectators do
        local spectator = spectators[i]
        if spectator:isPlayer() then
            spectator:sendTextMessage(MESSAGE_EVENT_ADVANCE, 'There is already a team inside.')
        else
            spectator:remove()
        end
    end   

    end

    item:transform(item.itemid == 9826 and 9825 or 9826)
    return true
end