Ubuntu Groovy Gorilla 20.10 installer crashes says fatal error

[aris]

I was installing Ubuntu 20.10 on a legacy BIOS computer. The installer reported a fatal error and exited out. I was installing Ubuntu into a logical partition. I also selected for grub to the partition itself. I wanted to use my Focal partition to manager GRUB.

I have tried installing it both online and offline. I have also tried installing without starting the live session and clicking install from the first window popup. In all instances the installer crashes and fails to install.

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: ubiquity 20.10.13
ProcVersionSignature: Ubuntu 5.8.0-25.26-generic 5.8.14
Uname: Linux 5.8.0-25-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu50
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.455
Date: Fri Oct 23 14:21:36 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
RebootRequiredPkgs:
 linux-image-5.8.0-25-generic
 linux-base
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)