package shim-signed 1.34.5+13-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 5

[Nagesh Bheemisetty]

running sudo apt-get update is giving this error

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: shim-signed 1.34.5+13-0ubuntu2
ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15
Uname: Linux 4.15.0-15-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.sys.kernel.moksbstate_disabled: Error: [Errno 2] No such file or directory: '/proc/sys/kernel/moksbstate_disabled'
ApportVersion: 2.20.9-0ubuntu6
AptOrdering:
 ubuntu-desktop:amd64: Purge
 alsa-base:amd64: Purge
 NULL: ConfigurePending
 NULL: PurgePending
 NULL: ConfigurePending
Architecture: amd64
Date: Fri Apr 27 23:16:04 2018
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-trusty-amd64-osp1-20150720-0
EFITables:
 Apr 27 22:51:28 Nagesh kernel: efi: EFI v2.40 by American Megatrends
 Apr 27 22:51:28 Nagesh kernel: efi: ACPI=0x7dd22000 ACPI 2.0=0x7dd22000 SMBIOS=0x7ea73000 ESRT=0x7e9ea118 SMBIOS 3.0=0x7ea72000 MPS=0xfcb60 MEMATTR=0x7b79a018
 Apr 27 22:51:28 Nagesh kernel: secureboot: Secure boot could not be determined (mode 0)
 Apr 27 22:51:28 Nagesh kernel: esrt: Reserving ESRT space from 0x000000007e9ea118 to 0x000000007e9ea150.
 Apr 27 22:51:29 Nagesh kernel: Bluetooth: hci0: Secure boot is enabled
ErrorMessage: installed shim-signed package post-installation script subprocess returned error exit status 5
InstallationDate: Installed on 2016-09-22 (582 days ago)
InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20150720-04:06
Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3
PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2
 apt 1.6.1
SecureBoot: 6 0 0 0 0
SourcePackage: shim-signed
Title: package shim-signed 1.34.5+13-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 5
UpgradeStatus: Upgraded to bionic on 2018-04-23 (5 days ago)

[Steve Langasek (vorlon)]

You are not upgrading from an up-to-date mirror. This is a bug that was fixed several days before the release of 18.04. Please ensure you are installing shim-signed 1.34.9 or later.