[Bug 1977688] Re: package shim-signed 1.51+15.4-0ubuntu9 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1

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** Tags removed: need-duplicate-check

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https://bugs.launchpad.net/bugs/1977688

Title:
  package shim-signed 1.51+15.4-0ubuntu9 failed to install/upgrade:
  installed shim-signed package post-installation script subprocess
  returned error exit status 1

Status in shim-signed package in Ubuntu:
  New

Bug description:
  When i want to install a decode video software, it is appeared

  ProblemType: Package
  DistroRelease: Ubuntu 21.04
  Package: shim-signed 1.51+15.4-0ubuntu9
  ProcVersionSignature: Ubuntu 5.11.0-49.55-generic 5.11.22
  Uname: Linux 5.11.0-49-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  .proc.sys.kernel.moksbstate_disabled: Error: [Errno 2] No such file or directory: '/proc/sys/kernel/moksbstate_disabled'
  ApportVersion: 2.20.11-0ubuntu65.4
  AptOrdering:
   libfdk-aac2:amd64: Install
   gstreamer1.0-fdkaac:amd64: Install
   NULL: ConfigurePending
  Architecture: amd64
  BootEFIContents:
   BOOTX64.CSV
   grub.cfg
   grubx64.efi
   mmx64.efi
   shimx64.efi
  CasperMD5CheckResult: unknown
  Date: Sun Jun  5 20:16:55 2022
  DpkgHistoryLog:
   Start-Date: 2022-06-05  20:16:29
   Commandline: packagekit role='install-packages'
   Requested-By: nilay (1000)
   Install: libfdk-aac2:amd64 (2.0.1-1, automatic), gstreamer1.0-fdkaac:amd64 (1.18.3-2build1)
  EFIBootMgr: Error: command ['efibootmgr', '-v'] failed with exit code 2: EFI variables are not supported on this system.
  EFITables:
   
  ErrorMessage: installed shim-signed package post-installation script subprocess returned error exit status 1
  Python3Details: /usr/bin/python3.9, Python 3.9.5, python3-minimal, 3.9.4-1
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.20.9ubuntu1
   apt  2.2.4ubuntu0.1
  SourcePackage: shim-signed
  Title: package shim-signed 1.51+15.4-0ubuntu9 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)

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