package unattended-upgrades 0.90ubuntu0.6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 10

[Gautam krishna.R]

While i am running apt-get install some packages it is showing this error:
```

Preparing to unpack .../python_2.7.11-1_amd64.deb ...
Unpacking python (2.7.11-1) ...
Setting up unattended-upgrades (0.90ubuntu0.6) ...
dpkg: error processing package unattended-upgrades (--configure):
 subprocess installed post-installation script returned error exit status 10
Setting up libpython2.7-stdlib:amd64 (2.7.12-1ubuntu0~16.04.1) ...
Setting up python2.7 (2.7.12-1ubuntu0~16.04.1) ...
Setting up libpython-stdlib:amd64 (2.7.11-1) ...
Setting up python (2.7.11-1) ...
Setting up grub-pc (2.02~beta2-36ubuntu3.11) ...
dpkg: error processing package grub-pc (--configure):
 subprocess installed post-installation script returned error exit status 10
dpkg: dependency problems prevent configuration of grub-gfxpayload-lists:
 grub-gfxpayload-lists depends on grub-pc (>= 1.99~20101210-1ubuntu2); however:
  Package grub-pc is not configured yet.

dpkg: error processing package grub-gfxpayload-lists (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          Errors were encountered while processing:
 unattended-upgrades
 grub-pc
 grub-gfxpayload-lists
E: Sub-process /usr/bin/dpkg returned an error code (1)

```

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: unattended-upgrades 0.90ubuntu0.6
ProcVersionSignature: Ubuntu 4.4.0-83.106-generic 4.4.70
Uname: Linux 4.4.0-83-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.6
Architecture: amd64
Date: Thu Jul 6 16:53:00 2017
DuplicateSignature:
 package:unattended-upgrades:0.90ubuntu0.6
 Setting up grub-pc (2.02~beta2-36ubuntu3.11) ...
 dpkg: error processing package grub-pc (--configure):
  subprocess installed post-installation script returned error exit status 10
ErrorMessage: subprocess installed post-installation script returned error exit status 10
InstallationDate: Installed on 2017-07-03 (3 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.2
 apt 1.2.20
SourcePackage: unattended-upgrades
Title: package unattended-upgrades 0.90ubuntu0.6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 10
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.init.d.unattended-upgrades: 2016-02-19T03:49:18