installer crashes with debconf error: ubuntu install.py: ValueError: invalid literal for int() with base 10: ''

[tanay]

when installiing it came installer crashed

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: ubiquity 22.04.17
ProcVersionSignature: Ubuntu 5.15.0-43.46-generic 5.15.39
Uname: Linux 5.15.0-43-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.470
CurrentDesktop: ubuntu:GNOME
Date: Fri Sep 30 21:26:13 2022
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1)
ProcEnviron:
 LANGUAGE=en_IN
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_IN
 LC_NUMERIC=C.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Steve Langasek (vorlon)]

The error in the logs is:

Sep 30 15:52:22 ubuntu install.py: Exception during installation:
Sep 30 15:52:22 ubuntu install.py: Traceback (most recent call last):
Sep 30 15:52:22 ubuntu install.py: File "/usr/share/ubiquity/install.py", line 771, in <module>
Sep 30 15:52:22 ubuntu install.py: install.run()
Sep 30 15:52:22 ubuntu install.py: File "/usr/share/ubiquity/install.py", line 134, in run
Sep 30 15:52:22 ubuntu install.py: self.copy_all()
Sep 30 15:52:22 ubuntu install.py: File "/usr/share/ubiquity/install.py", line 529, in copy_all
Sep 30 15:52:22 ubuntu install.py: self.db.progress(
Sep 30 15:52:22 ubuntu install.py: File "/usr/lib/python3/dist-packages/debconf.py", line 83, in <lambda>
Sep 30 15:52:22 ubuntu install.py: lambda *args, **kw: self.command(command, *args, **kw))
Sep 30 15:52:22 ubuntu install.py: File "/usr/lib/python3/dist-packages/debconf.py", line 104, in command
Sep 30 15:52:22 ubuntu install.py: status = int(status)
Sep 30 15:52:22 ubuntu install.py: ValueError: invalid literal for int() with base 10: ''
Sep 30 15:52:22 ubuntu install.py:

I'm unsure whether this is sufficient information to diagnose the bug.