Sziasztok, az lenne a problémám, hogy a sawmta modban, az inventory nem nyílik meg, az actionbar is működik és az azon lévő itemek, de az inv nem jelenik meg. Mi lehet a baj? Előre is köszi a válaszokat!

attempt to perform arithmetic on a nil value
 
Ehhez a functionhoz: 
 

function getAllItemWeight()
local bagWeight = 0
local keyWeight = 0
local vehWeight = 0
local objectWeight = 0
if isElement(elementSource) then
   if getElementType(elementSource) == \"player\" then
      if inventoryItems[elementSource][\"bag\"] then
         for i = 1, row * column do
            if (inventoryItems[elementSource][\"bag\"]) then
               bagWeight = bagWeight + (getItemWeight(inventoryItems[elementSource][\"bag\"][\"id\"]) * inventoryItems[elementSource][\"bag\"][\"count\"])
            end
         end
      end
      if inventoryItems[elementSource][\"key\"] then
         for i = 1, row * column do
            if (inventoryItems[elementSource][\"key\"]) then
               keyWeight = keyWeight + (getItemWeight(inventoryItems[elementSource][\"key\"][\"id\"]) * inventoryItems[elementSource][\"key\"][\"count\"])
            end
         end
      end
   end
   if getElementType(elementSource) == \"vehicle\" then
      if inventoryItems[elementSource] then
         if inventoryItems[elementSource][\"vehicle\"] then
            for i = 1, row * column do
               if (inventoryItems[elementSource][\"vehicle\"]) then
                  vehWeight = vehWeight + (getItemWeight(inventoryItems[elementSource][\"vehicle\"][\"id\"]) * inventoryItems[elementSource][\"vehicle\"][\"count\"])
               end   
            end
         end
      end
   end
   if getElementType(elementSource) == \"object\" then
      if inventoryItems[elementSource][\"object\"] then
         for i = 1, row * column do
            if (inventoryItems[elementSource][\"object\"]) then
               objectWeight = objectWeight + (getItemWeight(inventoryItems[elementSource][\"object\"][\"id\"]) * inventoryItems[elementSource][\"object\"][\"count\"])
            end   
         end
      end
   end
end
return bagWeight + keyWeight + vehWeight + objectWeight
end