jammy kubuntu ubiquity crashed, booted from thumb drive, with toram

[gregrwm]

Booted from thumb drive thus:
menuentry "d07 2021-11-19 Fri 15:13:58 kubuntu/jammy-desktop-amd64.iso" {
     echo "d07 2021-11-19 Fri 15:13:58 kubuntu/jammy-desktop-amd64.iso"
     #3666923520 2021-11-19 Fri 15:13:58 kubuntu/jammy-desktop-amd64.iso
                                        i=/boo/kubuntu/jammy-desktop-amd64.iso
                      search --no-floppy --set=root --fs-uuid ADDA-F0B9
  loopback j $i
    linux (j)/casper/vmlinuz boot=casper iso-scan/filename="$i" panic=30 toram --
   initrd (j)/casper/initrd
}

Ran to completion of "copying files", tho i didn't see anything about the bootloader, when it crashed.

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 19:53:24 2021
InstallCmdLine: BOOT_IMAGE=(j)/casper/vmlinuz boot=casper iso-scan/filename=/boo/kubuntu/jammy-desktop-amd64.iso panic=30 toram --
LiveMediaBuild: Kubuntu 22.04 LTS "Jammy Jellyfish" - Alpha amd64 (20211113)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)