[Bug 1827443] [NEW] ubuntu-release-upgrader crashed with AttributeError: 'NoneType' object has no attribute 'group'

[errors.ubuntu.com bug bridge]

Public bug reported:

The Ubuntu Error Tracker has been receiving reports about a problem regarding ubuntu-release-upgrader.  This problem was most recently seen with package version 1:19.04.16.2, the problem page at https://errors.ubuntu.com/problem/8a4265cf9ce24a669031fe6f29198fa4c9c8f562 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/.

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: disco

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https://bugs.launchpad.net/bugs/1827443

Title:
  ubuntu-release-upgrader crashed with AttributeError: 'NoneType' object
  has no attribute 'group'

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  The Ubuntu Error Tracker has been receiving reports about a problem regarding ubuntu-release-upgrader.  This problem was most recently seen with package version 1:19.04.16.2, the problem page at https://errors.ubuntu.com/problem/8a4265cf9ce24a669031fe6f29198fa4c9c8f562 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/.

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