Kubuntu install error

[Jack Ingersoll]

installer crashed because it could not update grub
ubiquity log has been sent

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: ubiquity 20.10.13 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 5.8.0-25.26-generic 5.8.14
Uname: Linux 5.8.0-25-generic x86_64
ApportVersion: 2.20.11-0ubuntu50
Architecture: amd64
CasperMD5CheckMismatches: ./pool/restricted/b/bcmwl/bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu7_amd64.deb
CasperMD5CheckResult: skip
CasperVersion: 1.455
CurrentDesktop: KDE
Date: Fri Jan 29 20:32:36 2021
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/kubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Kubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
RebootRequiredPkgs: linux-image-5.8.0-25-generic
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)