[Bug 2003558] Re: KeyError: 'pecynnau'

[Christoph Koop]

One way to reproduce:
podman run -it --rm mcr.microsoft.com/dotnet/aspnet:6.0-focal sh
then within sh:
# apt-get update && apt-get -y install ttf-mscorefonts-installer
When the Eula appears, press Ctrl+D until the install continues.

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https://bugs.launchpad.net/bugs/2003558

Title:
  KeyError: 'pecynnau'

Status in update-notifier package in Ubuntu:
  New

Bug description:
  When installing ttf-mscorefonts-installer on Ubuntu 20.04 (using
  docker image asp-net-6.0-focal)

  apt-get update && apt-get -y install ttf-mscorefonts-installer

  Error message:

  Traceback (most recent call last):
    File "/usr/lib/update-notifier/package-data-downloader", line 351, in <module>
      process_download_requests()
    File "/usr/lib/update-notifier/package-data-downloader", line 329, in process_download_requests
      trigger_update_notifier(previous_failures, permanent=True)
    File "/usr/lib/update-notifier/package-data-downloader", line 156, in trigger_update_notifier
      string.Template(input).substitute(
    File "/usr/lib/python3.8/string.py", line 126, in substitute
      return self.pattern.sub(convert, self.template)
    File "/usr/lib/python3.8/string.py", line 119, in convert
      return str(mapping[named])
  KeyError: 'pecynnau'
  dpkg: error processing package update-notifier-common (--configure):
   installed update-notifier-common package post-installation script subprocess returned error exit status 1
  dpkg: dependency problems prevent configuration of ttf-mscorefonts-installer:
   ttf-mscorefonts-installer depends on update-notifier-common (>= 0.119ubuntu2); however:
    Package update-notifier-common is not configured yet.

  dpkg: error processing package ttf-mscorefonts-installer (--configure):
   dependency problems - leaving unconfigured

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