DSMR error

Hi all,

I have the following error
2019-01-23 16:35:49 ERROR (MainThread) [dsmr_parser.clients.protocol] disconnected due to exception
NoneType:

I am using a P1-DSMR usb cable. with a L&GE350 Smart Meter.

It hase stoped working fora couple of days now?

Any help is welcome