jammy kubuntu ubiquity crashed, booted from thumb drive, today's iso

[gregrwm]

same as https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1952019

but using today's "current" iso

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: ubiquity 21.10.10
ProcVersionSignature: Ubuntu 5.13.0-19.19-generic 5.13.14
Uname: Linux 5.13.0-19-generic x86_64
ApportVersion: 2.20.11-0ubuntu73
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.465
Date: Tue Nov 23 22:06:57 2021
InstallCmdLine: BOOT_IMAGE=(j)/casper/vmlinuz boot=casper iso-scan/filename=/boo/jk/jammy-desktop-amd64.iso panic=30 --
LiveMediaBuild: Kubuntu 22.04 LTS "Jammy Jellyfish" - Alpha amd64 (20211123)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)