package shim-signed 1.46+15.4-0ubuntu1 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1

[Rob Frohne]

I'm not sure exactly what is going on here. I was getting an error yesterday"Failed to set MokLinsRT: Invalid Parameter... Someone online said to install refind, but it didn't change anything. I'll uninstall that now.

ProblemType: Package
DistroRelease: Ubuntu 21.04
Package: shim-signed 1.46+15.4-0ubuntu1
ProcVersionSignature: Ubuntu 5.11.0-13.14-generic 5.11.7
Uname: Linux 5.11.0-13-generic x86_64
.proc.sys.kernel.moksbstate_disabled: Error: [Errno 2] No such file or directory: '/proc/sys/kernel/moksbstate_disabled'
ApportVersion: 2.20.11-0ubuntu62
AptOrdering:
 shim:amd64: Install
 shim-signed:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
BootEFIContents:
 BOOTX64.CSV
 grub.cfg
 grubx64.efi
 mmx64.efi
 shimx64.efi
CasperMD5CheckResult: pass
Date: Wed Apr 14 06:09:21 2021
EFITables:
 Apr 13 10:16:40 frohro-2760p kernel: efi: EFI v2.00 by HPQ
 Apr 13 10:16:40 frohro-2760p kernel: efi: ACPI=0xbcffe000 ACPI 2.0=0xbcffe014 SMBIOS=0xbc66d518
 Apr 13 10:16:40 frohro-2760p kernel: secureboot: Secure boot disabled
 Apr 13 10:16:40 frohro-2760p kernel: secureboot: Secure boot disabled
ErrorMessage: installed shim-signed package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2021-04-09 (4 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Beta amd64 (20210331.1)
Python3Details: /usr/bin/python3.9, Python 3.9.4, python3-minimal, 3.9.2-2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.20.7.1ubuntu4
 apt 2.2.2ubuntu1
SourcePackage: shim-signed
Title: package shim-signed 1.46+15.4-0ubuntu1 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)