Lua Error on Console Clean House

[samuel157]

XML:

<globalevent name="checkhouses" type="startup" event="script" value="inactiveHouses.lua"/>

Script:

function getHouseOwnerLastLogin(ownerID)
    local Query = db.getResult("SELECT `lastlogin` FROM `players` WHERE id = '".. ownerID .."'")
    if(Query:getID() == -1) then
        return 0
    end
    local Result = Query:getDataInt("lastlogin")
    Query:free()
    return Result
end

function onStartup()
    print(">> Checking inactive houses")
    for _, townID in pairs(getTownList()) do
        for _, houseID in pairs(getTownHouses(townID.id)) do
            local houseInfo = getHouseInfo(houseID)
            if houseInfo.owner ~= 0 then
                if not houseInfo.guildHall and getHouseOwnerLastLogin(houseInfo.owner) < os.time() - (60 * 60 * 24 * 5) then
                    setHouseOwner(houseID, false, true)
                end
            end
        end
    end
    return true
end

Error Distro:

[01/10/2022 17:19:01] [Error - GlobalEvent Interface]
[01/10/2022 17:19:02] data/globalevents/scripts/inactiveHouses.lua:onStartup
[01/10/2022 17:19:03] Description:
[01/10/2022 17:19:03] data/globalevents/scripts/inactiveHouses.lua:13: attempt to call global 'getTownList' (a nil value)
[01/10/2022 17:19:04] stack traceback:
[01/10/2022 17:19:04]     data/globalevents/scripts/inactiveHouses.lua:13: in function <data/globalevents/scripts/inactiveHouses.lua:11>