This looks like a network error coming from u-d-m. There's not much system-image can do if ubuntu-download-manager can't make a network connection.
** Changed in: system-image (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1250817 Title: /usr/sbin/system-image- dbus:FileNotFoundError:<lambda>:_check_for_update:check_for_update:run_until:_get_blacklist_1:get_keyring:get_files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/system-image/+bug/1250817/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs