[Bug 1878500] Re: ValueError: package does not exist

[Seth Arnold]

This is my laptop; I followed Richard Laager's ZFS Root on Ubuntu
installation guide a year ago, which starts with using debootstrap, and
then installing what you want by hand after that. So, while this system
is used as a desktop, it doesn't have many of the usual tasksets
installed:

$ tasksel --list-tasks
u kubuntu-live	Kubuntu live CD
u lubuntu-live	Lubuntu live CD
u ubuntu-budgie-live	Ubuntu Budgie live CD
u ubuntu-live	Ubuntu live CD
u ubuntu-mate-live	Ubuntu MATE Live CD
u ubuntustudio-dvd-live	Ubuntu Studio live DVD
u xubuntu-live	Xubuntu live CD
u cloud-image	Ubuntu Cloud Image (instance)
u dns-server	DNS server
u kubuntu-desktop	Kubuntu desktop
u lamp-server	LAMP server
u lubuntu-desktop	Lubuntu Desktop
u mail-server	Mail server
u postgresql-server	PostgreSQL database
u print-server	Print server
u samba-server	Samba file server
u ubuntu-budgie-desktop	Ubuntu Budgie desktop
u ubuntu-desktop	Ubuntu desktop
u ubuntu-desktop-default-languages	Ubuntu desktop default languages
u ubuntu-desktop-minimal	Ubuntu minimal desktop
u ubuntu-desktop-minimal-default-languages	Ubuntu minimal desktop default languages
u ubuntu-mate-core	Ubuntu MATE minimal
u ubuntu-mate-desktop	Ubuntu MATE desktop
u ubuntustudio-audio	Audio recording and editing suite
u ubuntustudio-desktop	Ubuntu Studio desktop
u ubuntustudio-desktop-core	Ubuntu Studio minimal DE installation
u ubuntustudio-fonts	Large selection of font packages
u ubuntustudio-graphics	2D/3D creation and editing suite
u ubuntustudio-photography	Photograph touchup and editing suite
u ubuntustudio-publishing	Publishing applications
u ubuntustudio-video	Video creation and editing suite
u xubuntu-core	Xubuntu minimal installation
u xubuntu-desktop	Xubuntu desktop
i openssh-server	OpenSSH server
u server	Basic Ubuntu server


Thanks

** Changed in: update-manager (Ubuntu)
       Status: Incomplete => New

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https://bugs.launchpad.net/bugs/1878500

Title:
  ValueError: package does not exist

Status in update-manager package in Ubuntu:
  New

Bug description:
  Hello, while reporting a bug on focal against the update-manager
  source package, I got an error:

  $ ubuntu-bug update-manager-core

  *** Collecting problem information

  The collected information can be sent to the developers to improve the
  application. This might take a few minutes.
  .....
  *** Is the issue you are reporting one you encountered when upgrading Ubuntu from one release to another?

  
  What would you like to do? Your options are:
    Y: Yes
    N: No
    C: Cancel
  Please choose (Y/N/C): n
  ERROR: hook /usr/share/apport/package-hooks/source_update-manager.py crashed:
  Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/apport/report.py", line 225, in _run_hook
      symb['add_info'](report, ui)
    File "/usr/share/apport/package-hooks/source_update-manager.py", line 47, in add_info
      attach_gsettings_package(report, 'update-manager')
    File "/usr/lib/python3/dist-packages/apport/hookutils.py", line 649, in attach_gsettings_package
      for schema_file in files_in_package(package, '/usr/share/glib-2.0/schemas/*.gschema.xml'):
    File "/usr/lib/python3/dist-packages/apport/hookutils.py", line 595, in files_in_package
      files = packaging.get_files(package)
    File "/usr/lib/python3/dist-packages/apport/packaging_impl.py", line 365, in get_files
      list = self._call_dpkg(['-L', package])
    File "/usr/lib/python3/dist-packages/apport/packaging_impl.py", line 1197, in _call_dpkg
      raise ValueError('package does not exist')
  ValueError: package does not exist
  ...

  *** Send problem report to the developers?

  After the problem report has been sent, please fill out the form in the
  automatically opened web browser.

  What would you like to do? Your options are:
    S: Send report (4.8 KB)
    V: View report
    K: Keep report file for sending later or copying to somewhere else
    I: Cancel and ignore future crashes of this program version
    C: Cancel
  Please choose (S/V/K/I/C): s

  *** Uploading problem information

  The collected information is being sent to the bug tracking system.
  This might take a few minutes.
  0%

  *** To continue, you must visit the following URL:

  
  Thanks

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: update-manager-core 1:20.04.9
  ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
  Uname: Linux 5.4.0-26-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Wed May 13 23:12:23 2020
  PackageArchitecture: all
  ProcEnviron:
   TERM=rxvt-unicode-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to focal on 2020-01-24 (110 days ago)

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