Lua TFS 1.0 | Enchanting error

[survivor]

Hello, I'm getting this error:

with this script:

local config = {
   manaCost = 300,
   soulCost = 2,
}

local spheres = {
   [7759] = {3, 7},
   [7760] = {1, 5},
   [7761] = {2, 6},
   [7762] = {4, 8}
}

local enchantableGems = {2147, 2146, 2149, 2150}
local enchantableItems = {2383, 7383, 7384, 7406, 7402, 2429, 2430, 7389, 7380, 2454, 2423, 2445, 7415, 7392, 2391, 2544, 8905}

local enchantingAltars = {
   {7504, 7505, 7506, 7507},
   {7508, 7509, 7510, 7511},
   {7516, 7517, 7518, 7519},
   {7512, 7513, 7514, 7515}
}

local enchantedGems = {7760, 7759, 7761, 7762}
local enchantedItems = {
   [2383] = {7744, 7763, 7854, 7869},
   [7383] = {7745, 7764, 7855, 7870},
   [7384] = {7746, 7765, 7856, 7871},
   [7406] = {7747, 7766, 7857, 7872},
   [7402] = {7748, 7767, 7858, 7873},
   [2429] = {7749, 7768, 7859, 7874},
   [2430] = {7750, 7769, 7860, 7875},
   [7389] = {7751, 7770, 7861, 7876},
   [7380] = {7752, 7771, 7862, 7877},
   [2454] = {7753, 7772, 7863, 7878},
   [2423] = {7754, 7773, 7864, 7879},
   [2445] = {7755, 7774, 7865, 7880},
   [7415] = {7756, 7775, 7866, 7881},
   [7392] = {7757, 7776, 7867, 7882},
   [2391] = {7758, 7777, 7868, 7883},
   [2544] = {7840, 7839, 7850, 7838},
   [8905] = {8906, 8907, 8909, 8908}
}

function onUse(player, item, fromPosition, target, toPosition, isHotkey)
   if isInArray({33268, 33269}, toPosition.x) and toPosition.y == 31830 and toPosition.z == 10 and player:getStorageValue(Storage.ElementalSphere.QuestLine) > 0 then
     if not isInArray(spheres[item.itemid], player:getVocation():getId()) then
       return false
     elseif isInArray({7915, 7916}, target.itemid) then
       player:say('Turn off the machine first.', TALKTYPE_MONSTER_SAY)
       return true
     else
       player:setStorageValue(Storage.ElementalSphere.MachineGemCount, math.max(1, player:getStorageValue(Storage.ElementalSphere.MachineGemCount) + 1))
       toPosition:sendMagicEffect(CONST_ME_PURPLEENERGY)
       item:transform(item.itemid, item.type - 1)
       return true
     end
   end

   if item.itemid == 2147 and target.itemid == 2342 then
     target:transform(2343)
     target:decay()
     item:remove(1)
     toPosition:sendMagicEffect(CONST_ME_MAGIC_RED)
     return true
   end

   if item.itemid == 7760 and isInArray({9934, 10022}, target.itemid) then
     target:transform(9933)
     item:remove(1)
     toPosition:sendMagicEffect(CONST_ME_MAGIC_RED)
     return true
   end

   if isInArray(enchantableGems, item.itemid) then
     local subtype = item.type
     if subtype == 0 then
       subtype = 1
     end

     local mana = config.manaCost * subtype
     if player:getMana() < mana then
       player:sendCancelMessage(RETURNVALUE_NOTENOUGHMANA)
       return false
     end

     local soul = config.soulCost * subtype
     if player:getSoul() < soul then
       player:sendCancelMessage(RETURNVALUE_NOTENOUGHSOUL)
       return false
     end

     local targetId = table.find(enchantableGems, item.itemid)
     if not targetId or not isInArray(enchantingAltars[targetId], target.itemid) then
       return false
     end

     player:addMana(-mana)
     player:addSoul(-soul)
     item:transform(enchantedGems[targetId])
     player:addManaSpent(mana * configManager.getNumber(configKeys.RATE_MAGIC))
     player:getPosition():sendMagicEffect(CONST_ME_HOLYDAMAGE)
     return true
   end

   if item.itemid == 7761 and isInArray({9949, 9954}, target.itemid) then
     target:transform(target.itemid - 1)
     target:decay()
     item:remove(1)
     toPosition:sendMagicEffect(CONST_ME_MAGIC_GREEN)
     return true
   end

   if isInArray(enchantedGems, item.itemid) then
     if not isInArray(enchantableItems, target.itemid) then
       fromPosition:sendMagicEffect(CONST_ME_POFF)
       return false
     end

     local targetId = table.find(enchantedGems, item.itemid)
     if not targetId then
       return false
     end

     local subtype = target.type
     if not isInArray({2544, 8905}, target.itemid) then
       subtype = 1000
     end

     target:transform(enchantedItems[target.itemid][targetId], subtype)
     target:getPosition():sendMagicEffect(CONST_ME_MAGIC_RED)
     item:remove(1)
     return true
   end
   return false
end

but the script is oke I copied it from printer's orts.
anyone any idea what could be wrong?

yours,