[Bug 1755452] Re: ubiquity crashed with ValueError in command(): I/O operation on closed file.

[Yousuf 'Jay' Philips]

Happened to me on xubuntu 20.04 daily iso from march 20th 2020.

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Title:
  ubiquity crashed with ValueError in command(): I/O operation on closed
  file.

Status in ubiquity package in Ubuntu:
  Confirmed

Bug description:
  Test Case:
  1. Launch ubiquity
  2. Select a language and continue
  3. Select a keyboard layout and quit

  Actual result
  This crash happens when Ubiquity exits.

  ProblemType: Crash
  DistroRelease: Ubuntu 18.04
  Package: ubiquity 18.04.3
  ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
  Uname: Linux 4.15.0-10-generic x86_64
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
  CasperVersion: 1.389
  Date: Tue Mar 13 10:48:44 2018
  ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
  InterpreterPath: /usr/bin/python3.6
  LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180313)
  ProcCmdline: /usr/bin/python3 /usr/lib/ubiquity/bin/ubiquity -d
  ProcEnviron: Error: [Errno 13] Permission non accordée: '/proc/5714/environ'
  Python3Details: /usr/bin/python3.6, Python 3.6.4+, python3-minimal, 3.6.4-1
  PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', '-d']
  PythonDetails: /usr/bin/python2.7, Python 2.7.14+, python-minimal, 2.7.14-4
  SourcePackage: ubiquity
  Title: ubiquity crashed with ValueError in command(): I/O operation on closed file.
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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