[Bug 1955701] Re: installer crashing wit "Could not restore packages from the previous install"

[Paul White]

** Package changed: ubuntu => ubiquity (Ubuntu)

** Tags added: focal

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Title:
  installer crashing wit "Could not restore packages from the previous
  install"

Status in ubiquity package in Ubuntu:
  New

Bug description:
  installer crashes nearly the end of fresh install of kubuntu 20.04 on lvm with luks.
  install kernel 5.11.0-27 on 20.04.3 LTS

  in syslog the following error messages appear:
  ==============================================
  in run /usr/share/ubiquity/plugininstall.py: 
  #257 in "self.apt_clone_restore()"
  #1655 in apt_clone_restore "subprocess.check_call("

  in /usr/lib/python3.8/subprocess.py
  #364 in check_all raise CalledProcessError(retCode, cmd)

  with subprocess.CalledProcessError: Command '[apt-clone', 'restore-new-distro', '/target/ubuquity-apt-clone/apt-clone-state-kubuntu.tar.gz', 'focal', '--destination', '/target'] returned non-zero exit status 1
  ==============================================

  similar error messages are already filed under the below listed bug
  reports, the main difference being the line numbers in
  plugininstall.py

  1. https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1881829 
  in comment #2

  2. https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1928748
  in https://launchpadlibrarian.net/539276481/UbiquitySyslog.txt

  3. https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1936442
  in https://launchpadlibrarian.net/548660333/UbiquitySyslog.txt
  and in comment #2

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