Lua [Action][annihilator][help] console error OTX 3 :c

[Crixpx]

hi i have a problem in my script for annihilator quest when i use the lever i get this error

Lua Script Error: [Action Interface]
data/actions/scripts/quests/annihilator/lever.lua:onUse
data/actions/scripts/quests/annihilator/lever.lua:33: attempt to index a nil value
stack traceback:
        [C]: in function '__index'
        data/actions/scripts/quests/annihilator/lever.lua:33: in function <data/actions/scripts/quests/annihilator/lever.lua:28>

this is my script

local players_area =  {
    {x = 33225, y = 31671, z = 13},
    {x = 33222, y = 31671, z = 13}
}
local new_player_pos = {
    {x = 33222, y = 31659, z = 13},
    {x = 33221, y = 31659, z = 13},
    {x = 33220, y = 31659, z = 13},
    {x = 33219, y = 31659, z = 13}
}
local demonPos = {
    {x = 33219, y = 31657, z = 13},
    {x = 33221, y = 31657, z = 13},
    {x = 33223, y = 31659, z = 13},
    {x = 33224, y = 31659, z = 13},
    {x = 33220, y = 31661, z = 13},
    {x = 33222, y = 31661, z = 13}
}

function getPlayerCountInArea(toPos, fromPos)

    local count = 0
    local cid = {}

    for x = fromPos.x, toPos.x do
        for y = fromPos.y, toPos.y do
            for z = toPos.z, toPos.z do
                local creature = getTopCreature({x = x, y = y, z = z, stackpos = 255}).uid
                if(creature > 0) then
                    if(isPlayer(creature)) then
                        table.insert(cid, creature)
                        count = count + 1
                        if(getPlayerLevel(creature) < 100) then
                            return "All players must be above level 100."
                        end
                    elseif(isMonster(creature)) then
                        return "Players are allowed only."
                    end
                end
            end
        end
    end

    if(count < 4) then
        return "You need 4 players."
    else
        for i = 1,4 do
            Player(cid[5-i]):teleportTo(new_player_pos[i])
            Player(cid[5-i]):getPosition():sendMagicEffect(CONST_ME_TELEPORT)
        end
    end
    return true
end

function SummonDemon(Pos)
local count = 0
local cid = {}
    for x = Pos[1].x, Pos[4].x do
        for y = Pos[1].y, Pos[6].y do
            for z = Pos[1].z, Pos[6].z do
                local creature = getTopCreature({x = x, y = y, z = z, stackpos = 255}).uid
                if(creature > 0) then
                    if(isPlayer(creature)) then
                        return "A team is already inside the quest room."
                    elseif(isMonster(creature)) then
                        table.insert(cid, creature)
                        count = count + 1
                    end
                end
            end
        end
    end
    
    for i = 1, #cid do
        doRemoveCreature(cid[i])
    end

    for i = 1, #Pos do
        doSummonCreature("Demon", Pos[i])
    end
    
    return getPlayerCountInArea(players_area[1], players_area[2])
end

function onUse(cid, item)
    if(item.itemid == 1946) then
        local condition = SummonDemon(demonPos)
        if(condition ~= true) then
            doPlayerSendCancel(cid, condition)
        end
    else
        Item(item.uid):transform(1946)
    end
    return true
end

some can help my plz u.u