failed to install grub

[Nathan]

on hdd- erase everything and install ubuntu option with 3rd party drivers

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: ubiquity 21.04.9
ProcVersionSignature: Ubuntu 5.10.0-14.15-generic 5.10.11
Uname: Linux 5.10.0-14-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu59
Architecture: amd64
CasperMD5CheckMismatches: ./pool/restricted/n/nvidia-graphics-drivers-440-server/libnvidia-extra-440-server_440.95.01-0ubuntu2_amd64.deb
CasperMD5CheckResult: skip
CasperVersion: 1.456
CurrentDesktop: Budgie
Date: Fri Feb 26 15:28:15 2021
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu-budgie.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu-Budgie 21.04 "Hirsute Hippo" - Alpha amd64 (20210226)
ProcEnviron:
 LANGUAGE=en_CA.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_CA.UTF-8
 LC_NUMERIC=C.UTF-8
RebootRequiredPkgs:
 linux-image-5.10.0-14-generic
 linux-base
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)