Poller Failure, Ubuntu Server

Help
4

OK, found where it is! if I make the (temporary) change below, my problems are resolved (return 0 for isMaintenance). Thoughts?

    public static function isMaintenance($device_id)
    {
        return 0;
        $device = Device::find($device_id);
        return !is_null($device) && $device->isUnderMaintenance();
    }

Thanks!