package grub-pc 2.02+dfsg1-5ubuntu8.2 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 10

[anurag]

grub error

ProblemType: Package
DistroRelease: Ubuntu 18.10
Package: grub-pc 2.02+dfsg1-5ubuntu8.2
ProcVersionSignature: Ubuntu 4.18.0-15.16-generic 4.18.20
Uname: Linux 4.18.0-15-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.2
AptOrdering:
 firefox:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
Date: Wed Feb 27 10:31:33 2019
DuplicateSignature:
 package:grub-pc:2.02+dfsg1-5ubuntu8.2
 Setting up grub-pc (2.02+dfsg1-5ubuntu8.2) ...
 dpkg: error processing package grub-pc (--configure):
  installed grub-pc package post-installation script subprocess returned error exit status 10
ErrorMessage: installed grub-pc package post-installation script subprocess returned error exit status 10
InstallationDate: Installed on 2019-02-09 (17 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-15-generic root=UUID=3267773b-f61a-4259-8191-b872abb7c34e ro quiet splash
Python3Details: /usr/bin/python3.6, Python 3.6.7, unpackaged
PythonDetails: /usr/bin/python2.7, Python 2.7.15+, unpackaged
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu5
 apt 1.7.2
SourcePackage: grub2
Title: package grub-pc 2.02+dfsg1-5ubuntu8.2 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 10
UpgradeStatus: No upgrade log present (probably fresh install)