timeshift error

[Gary L. Roach]

Hi all

I keep getting the following error when trying to use "timeshift 1". Ive 
tried reloading the software  but still get the same error.

** (process:4286): CRITICAL**: 12:39:19.897: 
gee_abstract_collection_get_size: ass
ertion 'self != NULL' failed
App config saved: /etc/timeshift/timeshift.json

I have used timeshift for some time with no problems. This error just 
started recently. Timeshift run with no argument works fine.

Any help will be appreciated.

Gary R