Thanks for your bugreport. This looks like your /etc/apt/sources.list file does contain invalid entries. Please try to edit it and remove line '56'.
-- update manager wount update https://bugs.launchpad.net/bugs/180723 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
