Problem with start.lua

[kubernik]

Hello i need help :/

[28/01/2016 22:57:14] [Error - GlobalEvent Interface] 
[28/01/2016 22:57:14] data/globalevents/scripts/start.lua:onStartup
[28/01/2016 22:57:14] Description: 
[28/01/2016 22:57:14] data/globalevents/scripts/start.lua:9: attempt to call global 'updateHouseDoor' (a nil value)
[28/01/2016 22:57:14] stack traceback:
[28/01/2016 22:57:14]     data/globalevents/scripts/start.lua:9: in function <data/globalevents/scripts/start.lua:1>

function onStartup()
    db.executeQuery("UPDATE `players` SET `online` = 0 WHERE `world_id` = " .. getConfigValue('worldId') .. ";")
    --db.executeQuery("DELETE FROM `guild_wars` WHERE `status` = 0 AND `begin` < " .. (os.time() - 2 * 86400) .. ";")
    --db.executeQuery("UPDATE `guild_wars` SET `status` = 5, `end` = " .. os.time() .. " WHERE `status` = 1 AND `end` > 0 AND `end` < " .. os.time() .. ";")
   
    local houses = getTownHouses(1)
    print('>> [BH] Update houses door')
    for i = 1, #houses do
        updateHouseDoor(houses[i])
    end
    return true
end

Any suggestions? :3