/usr/bin/update-manager:AttributeError:/usr/bin/update-manager@117:start_update:start_available:refresh_cache:update

[errors.ubuntu.com bug bridge]

The Ubuntu Error Tracker has been receiving reports about a problem regarding update-manager. This problem was most recently seen with package version 1:18.10.4, the problem page at https://errors.ubuntu.com/problem/fb245b1221cb4479919a783c818b3054c223a942 contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.