xubuntu 20.04 install crashes

[psymin]

Installation functions.

Install process crashed towards end.

Might be my USB install media.

Posting in case it is useful to others.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity 20.04.6
ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
Uname: Linux 5.4.0-18-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu21
Architecture: amd64
CasperVersion: 1.441
Date: Fri Mar 27 09:31:04 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/xubuntu.seed only-ubiquity quiet splash ---
LiveMediaBuild: Xubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200323)
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu Foundations Team Bug Bot (crichton)]

Exception during installation:
Mar 27 15:30:37 xubuntu /plugininstall.py: apt_pkg.Error: E:Could not configure 'libc6:i386'. , E:Could not perform immediate configuration on 'libgcc-s1:i386'. Please see man 5 apt.conf under APT::Immediate-Configure for details. (2)
Mar 27 15:30:37 xubuntu /plugininstall.py:

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.