package shim-signed 1.40.2+15+1533136590.3beb971-0ubuntu1 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 127

[Djordje Jovanovic]

I try to update application from software and updater ,and at the end of installation,after download finished and start installation,this happen.
it crash.
I restart laptop and the info is shown again.

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: shim-signed 1.40.2+15+1533136590.3beb971-0ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-23.27-generic 5.4.29
Uname: Linux 5.4.0-23-generic x86_64
.proc.sys.kernel.moksbstate_disabled: Error: [Errno 2] No such file or directory: '/proc/sys/kernel/moksbstate_disabled'
ApportVersion: 2.20.11-0ubuntu26
Architecture: amd64
BootEFIContents:
 BOOTX64.CSV
 grub.cfg
 grubx64.efi
 mmx64.efi
 shimx64.efi
CasperMD5CheckResult: skip
Date: Thu Apr 9 21:15:58 2020
DuplicateSignature:
 package:shim-signed:1.40.2+15+1533136590.3beb971-0ubuntu1
 Setting up shim-signed (1.40.2+15+1533136590.3beb971-0ubuntu1) ...
 /var/lib/dpkg/info/shim-signed.postinst: 73: /usr/lib/grub/grub-multi-install: not found
 dpkg: error processing package shim-signed (--configure):
  installed shim-signed package post-installation script subprocess returned error exit status 127
EFITables:
 апр 09 21:18:03 jjoeshua kernel: efi: EFI v2.70 by American Megatrends
 апр 09 21:18:03 jjoeshua kernel: efi: ACPI 2.0=0x7921a000 ACPI=0x7921a000 SMBIOS=0x79842000 SMBIOS 3.0=0x79841000 MEMATTR=0x72101698 MPS=0xfcb50 ESRT=0x73b95d98
 апр 09 21:18:03 jjoeshua kernel: secureboot: Secure boot disabled
 апр 09 21:18:03 jjoeshua kernel: esrt: Reserving ESRT space from 0x0000000073b95d98 to 0x0000000073b95dd0.
 апр 09 21:18:03 jjoeshua kernel: secureboot: Secure boot disabled
ErrorMessage: installed shim-signed package post-installation script subprocess returned error exit status 127
InstallationDate: Installed on 2020-04-09 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.1ubuntu1
SecureBoot: 6 0 0 0 0
SourcePackage: shim-signed
Title: package shim-signed 1.40.2+15+1533136590.3beb971-0ubuntu1 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 127
UpgradeStatus: No upgrade log present (probably fresh install)

[Steve Langasek (vorlon)]

Please do not enable -proposed on the Ubuntu devel series. It is not intended for end-user consumption.

This bug has been fixed in https://launchpad.net/ubuntu/+source/shim-signed/1.40.3.

[Djordje Jovanovic (jjoeshua)]

I need a little help ,how to fix this..
I am new in Linux community, dont have advanced experience so it would be nice if will someone help me..?

[Djordje Jovanovic (jjoeshua)]

@vorlon I think I got it. I know what to disable in software and update.. so the left is this link what you post, when I download ,how to install this shim-signed?