Ubuntu 18.04 Install crashes during grub-installer

[Robert Moenck]

I tried to re-install Ubuntu 18.04 because I was getting a series of:
  ima: Error Communicating to TPM chip
messages on start-up and then the system would loop on the dots start-up screen.
I was able to Ctrl-D to get a command line and run grub-update to refresh the grub menu.

TPM is Trusted Platform Module a uefi bios setting
that I don't see in my BIOS screen.

I have a multi-boot system.
The Windows 10 partition still appears to work
but the suggestions for re-setting TPM from Windows 10 do not work for me.

It may be the grub-installer cannot be installed because of this TPM issue.
It may be this started happening after I attempted to install Ubuntu 20.10 on another partition.

I have tried the Boot Repair disk without success.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14.12
ProcVersionSignature: Ubuntu 4.18.0-15.16~18.04.1-generic 4.18.20
Uname: Linux 4.18.0-15-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CasperVersion: 1.394
CurrentDesktop: ubuntu:GNOME
Date: Mon Nov 9 15:38:13 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed cdrom-detect/try-usb=true noprompt floppy.allowed_drive_mask=0 ignore_uuid boot=casper only-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
ProcEnviron:
 LANGUAGE=en_CA.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_CA.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)