Install crashes on Lenovo yoga C630: "GrubInstaller failed with code %d" % ret"

re-Installing from a thumb drive and am getting the following in the syslog

A
Apr 27 17:57:16 ubuntu ubiquity: 8585 25567
Apr 27 17:57:16 ubuntu ubiquity[6194]: log-output -t ubiquity fuser -cv /target/dev
Apr 27 17:57:16 ubuntu ubiquity[6194]: log-output -t ubiquity umount /target/dev
Apr 27 17:57:16 ubuntu ubiquity: USER PID ACCESS COMMAND
Apr 27 17:57:16 ubuntu ubiquity: /target:
Apr 27 17:57:16 ubuntu ubiquity: root
Apr 27 17:57:16 ubuntu ubiquity: kernel
Apr 27 17:57:16 ubuntu ubiquity: swap /target/swapfile
Apr 27 17:57:16 ubuntu ubiquity: root
Apr 27 17:57:16 ubuntu ubiquity: mount /target
Apr 27 17:57:16 ubuntu ubiquity: kernel
Apr 27 17:57:16 ubuntu ubiquity[6194]: log-output -t ubiquity fuser -cv /target
Apr 27 17:57:16 ubuntu ubiquity: umount: /target: target is busy.
Apr 27 17:57:16 ubuntu ubiquity[6194]: log-output -t ubiquity umount /target
Apr 27 17:57:16 ubuntu ubiquity[6194]: Reverting lockdown of the desktop environment.
Apr 27 17:57:17 ubuntu ubiquity: umount: /target/cdrom: not mounted.
Apr 27 17:57:17 ubuntu /plugininstall.py: log-output -t ubiquity umount /target/cdrom
Apr 27 17:57:17 ubuntu /plugininstall.py: Exception during installation:
Apr 27 17:57:17 ubuntu /plugininstall.py: Traceback (most recent call last):
Apr 27 17:57:17 ubuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1718, in <module>
Apr 27 17:57:17 ubuntu /plugininstall.py: install.run()
Apr 27 17:57:17 ubuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 61, in wrapper
Apr 27 17:57:17 ubuntu /plugininstall.py: func(self)
Apr 27 17:57:17 ubuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 228, in run
Apr 27 17:57:17 ubuntu /plugininstall.py: self.configure_bootloader()
Apr 27 17:57:17 ubuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 930, in configure_bootloader
Apr 27 17:57:17 ubuntu /plugininstall.py: "GrubInstaller failed with code %d" % ret)
Apr 27 17:57:17 ubuntu /plugininstall.py: ubiquity.install_misc.InstallStepError: GrubInstaller failed with code 1
Apr 27 17:57:17 ubuntu /plugininstall.py:
Apr 27 17:58:11 ubuntu ubiquity[6194]: log-output -t ubiquity apport-bug ubiquity
Apr 27 17:58:11 ubuntu ubiquity[6194]: Reverting lockdown of the desktop environment.
Apr 27 17:58:11 ubuntu ubiquity[6194]: Reverting lockdown of the desktop environment.
Apr 27 17:58:17 ubuntu systemd-resolved[2064]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Apr 27 17:58:19 ubuntu systemd-resolved[2064]: message repeated 17 times: [ Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.]
Apr 27 17:59:14 ubuntu gnome-shell[5804]: JS WARNING: [resource:///org/gnome/shell/ui/keyboard.js 834]: reference to undefined property "label"
Apr 27 17:59:22 ubuntu gnome-shell[5804]: JS WARNING: [resource:///org/gnome/shell/ui/keyboard.js 892]: reference to undefined property 0
Apr 27 18:01:55 ubuntu dbus-daemon[2965]: [session uid=999 pid=2965] Activating service name='org.gnome.ControlCenter.SearchProvider' requested by ':1.86' (uid=999 pid=5804 comm="/usr/bin/gnome-shell " label="unconfined")
Apr 27 18:01:55 ubuntu dbus-daemon[2965]: [session uid=999 pid=2965] Activating service name='org.gnome.Nautilus' requested by ':1.86' (uid=999 pid=5804 comm="/usr/bin/gnome-shell " label="unconfined")
Apr 27 18:01:55 ubuntu dbus-daemon[2965]: [session uid=999 pid=2965] Activating service name='org.gnome.Calendar' requested by ':1.86' (uid=999 pid=5804 comm="/usr/bin/gnome-shell " label="unconfined")
Apr 27 18:01:55 ubuntu dbus-daemon[2965]: [session uid=999 pid=2965] Activating service name='org.gnome.seahorse.Application' requested by ':1.86' (uid=999 pid=5804 comm="/usr/bin/gnome-shell " label="unconfined")
Apr 27 18:01:55 ubuntu dbus-daemon[2965]: [session uid=999 pid=2965] Activating via systemd: service name='org.gnome.Terminal' unit='gnome-terminal-server.service' requested by ':1.86' (uid=999 pid=5804 comm="/usr/bin/gnome-shell " label="unconfined")
Apr 27 18:01:55 ubuntu systemd[2950]: Starting GNOME Terminal Server...
Apr 27 18:01:55 ubuntu dbus-daemon[2965]: [session uid=999 pid=2965] Successfully activated service 'org.gnome.ControlCenter.SearchProvider'
Apr 27 18:01:55 ubuntu dbus-daemon[2965]: [session uid=999 pid=2965] Successfully activated service 'org.gnome.Nautilus'
Apr 27 18:01:55 ubuntu dbus-daemon[2965]: [session uid=999 pid=2965] Successfully activated service 'org.gnome.seahorse.Application'
Apr 27 18:01:55 ubuntu dbus-daemon[2965]: [session uid=999 pid=2965] Successfully activated service 'org.gnome.Terminal'
Apr 27 18:01:55 ubuntu systemd[2950]: Started GNOME Terminal Server.
Apr 27 18:01:55 ubuntu nautilus[7687]: g_key_file_load_from_file: assertion 'file != NULL' failed
Apr 27 18:01:55 ubuntu nautilus[7687]: Could not establish a connection to Tracker: Failed to load SPARQL backend: Key file does not have group “DomainOntology”
Apr 27 18:01:56 ubuntu dbus-daemon[2965]: [session uid=999 pid=2965] Successfully activated service 'org.gnome.Calendar'
Apr 27 18:01:56 ubuntu nautilus[7687]: g_queue_pop_head: assertion 'queue != NULL' failed
Apr 27 18:01:56 ubuntu nautilus[7687]: g_queue_foreach: assertion 'queue != NULL' failed
Apr 27 18:01:56 ubuntu nautilus[7687]: g_queue_free: assertion 'queue != NULL' failed
Apr 27 18:01:56 ubuntu nautilus[7687]: g_queue_pop_head: assertion 'queue != NULL' failed
Apr 27 18:01:56 ubuntu nautilus[7687]: g_queue_foreach: assertion 'queue != NULL' failed
Apr 27 18:01:56 ubuntu nautilus[7687]: g_queue_free: assertion 'queue != NULL' failed

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14.13+ppa10
ProcVersionSignature: Ubuntu 5.2.0-99.5laptops1-generic 5.2.0-rc5
Uname: Linux 5.2.0-99-generic aarch64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: arm64
CasperVersion: 1.395
Date: Tue Apr 27 12:57:24 2021
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper maybe-ubiquity quiet splash efi=novamap clk_ignore_unused pd_ignore_unused ---
LiveMediaBuild: Ubuntu 18.04.2 LTS "Bionic Beaver" - Beta arm64 (20190809.1)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)