package gnome-accessibility-themes 3.18.0-2ubuntu2 failed to install/upgrade: unable to open '/usr/share/icons/HighContrast/16x16/status/dialog-warning.png.dpkg-new': Operation not permitted

[Nishant Paliwal]

this is happening from last update

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: gnome-accessibility-themes 3.18.0-2ubuntu2
ProcVersionSignature: Ubuntu 4.15.0-34.37~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
Date: Wed Sep 26 18:02:40 2018
Dependencies:

DuplicateSignature:
 package:gnome-accessibility-themes:3.18.0-2ubuntu2
 Unpacking gnome-accessibility-themes (3.18.0-2ubuntu2) over (3.18.0-2ubuntu1) ...
 dpkg: error processing archive /var/cache/apt/archives/gnome-accessibility-themes_3.18.0-2ubuntu2_all.deb (--unpack):
  unable to open '/usr/share/icons/HighContrast/16x16/status/dialog-warning.png.dpkg-new': Operation not permitted
ErrorMessage: unable to open '/usr/share/icons/HighContrast/16x16/status/dialog-warning.png.dpkg-new': Operation not permitted
InstallationDate: Installed on 2018-07-16 (72 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.4
 apt 1.2.27
SourcePackage: gnome-themes-standard
Title: package gnome-accessibility-themes 3.18.0-2ubuntu2 failed to install/upgrade: unable to open '/usr/share/icons/HighContrast/16x16/status/dialog-warning.png.dpkg-new': Operation not permitted
UpgradeStatus: Upgraded to xenial on 2018-09-25 (1 days ago)