Thanks for your bugreport.
This needs to be fixed to not crash but display a proper error message or automatically repair the problem.
As a workaround, please see: https://answers.edge.launchpad.net/ubuntu/+source/update-manager/+question/32068
Thanks for your bugreport.
This needs to be fixed to not crash but display a proper error message or automatically repair the problem.
As a workaround, please see: https:/ /answers. edge.launchpad. net/ubuntu/ +source/ update- manager/ +question/ 32068