Lua check items house

[Fortera Global]

this script is for check items inside all houses but something is wrong, no checking all houses, can someone help?

 local houses = Game.getHouses()
        local found = false       
        for i = 1, #houses do
            local house = houses[i]
            local house_tiles = house:getTiles()
            local itemInHouse = 0
            for x = 1, #house_tiles do
                local tile = house_tiles[x]
                local items = tile:getItems()
                for y = 1, #items do
                    local item = items[y]
                    if item:isContainer() then
                        itemInHouse = itemInHouse + searchInContainer(item, item_id)
                    elseif item:getId() == item_id then
                        itemInHouse = itemInHouse + item:getCount()
                    end
                end
            end
         end

 

[bayview]

Before you use a value you think might be a table you must validate if it is indeed a table and that it contains values.

local houses = Game.getHouses()
if houses and next(houses) then
    local found = false   
    for i = 1, #houses do
        local house = houses[i]
        local house_tiles = house:getTiles()
        local itemInHouse = 0
        if house_tiles and next(house_tiles) then
            for x = 1, #house_tiles do
                local tile = house_tiles[x]
                local items = tile:getItems()
                if items and next(items) then
                    for y = 1, #items do
                        local item = items[y]
                        if item:isContainer() then
                            itemInHouse = itemInHouse + searchInContainer(item, item_id)
                        elseif item:getId() == item_id then
                            itemInHouse = itemInHouse + item:getCount()
                        end
                    end
                end
            end
        end
    end
end

I would run this script step by step to determine if i was getting the right results and counter anything not interested in.