While testing the daily build of Lunar Lobster (April 12, 2023), I launched the installer just to make sure it launched. After launching the installer, I clicked the Continue button on the Welcome screen. From that point, I clicked the Quit button, confirmed the quit on the pop up dialog by clicking the Quit button, and then was presented with a Traceback saying, "ValueError: I/O operation on closed file." I have attached a screenshot of the traceback. This bug can be reproduced every time I launch the installer.
This bug was first experienced using VirtualBox 7.
OS:
Description: Ubuntu Lunar Lobster (development branch)
Release: 23.04
ubiquity:
Installed: 23.04.6
Candidate: 23.04.6
Version table:
*** 23.04.6 500
500 http://archive.ubuntu.com/ubuntu lunar/main amd64 Packages
100 /var/lib/dpkg/status
ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: ubiquity 23.04.6
ProcVersionSignature: Ubuntu 6.2.0-20.20-generic 6.2.6
Uname: Linux 6.2.0-20-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.26.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.480
CurrentDesktop: XFCE
Date: Wed Apr 12 13:41:31 2023
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/xubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Xubuntu 23.04 "Lunar Lobster" - Daily amd64 (20230412)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)
This bug has been reported on the Ubuntu ISO testing tracker.
A list of all reports related to this bug can be found here:
https:/