package oxygen-icon-theme (not installed) failed to install/upgrade: unable to open '/usr/share/icons/oxygen/base/256x256/apps/akregator.png.dpkg-new': Operation not permitted

[Andy Grimwood]

crashed

ProblemType: Package
DistroRelease: Ubuntu 19.04
Package: oxygen-icon-theme (not installed)
ProcVersionSignature: Ubuntu 5.0.0-15.16-generic 5.0.6
Uname: Linux 5.0.0-15-generic x86_64
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
Date: Tue May 28 18:44:37 2019
DuplicateSignature:
 package:oxygen-icon-theme:(not installed)
 Unpacking oxygen-icon-theme (5:5.56.0-0ubuntu2) ...
 dpkg: error processing archive /tmp/apt-dpkg-install-88RbJh/091-oxygen-icon-theme_5%3a5.56.0-0ubuntu2_all.deb (--unpack):
  unable to open '/usr/share/icons/oxygen/base/256x256/apps/akregator.png.dpkg-new': Operation not permitted
ErrorMessage: unable to open '/usr/share/icons/oxygen/base/256x256/apps/akregator.png.dpkg-new': Operation not permitted
InstallationDate: Installed on 2019-05-19 (12 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
Python3Details: /usr/bin/python3.7, Python 3.7.3, python3-minimal, 3.7.3-1
PythonDetails: /usr/bin/python2.7, Python 2.7.16, python-minimal, 2.7.16-1
RelatedPackageVersions:
 dpkg 1.19.6ubuntu1
 apt 1.8.1
SourcePackage: oxygen-icons5
Title: package oxygen-icon-theme (not installed) failed to install/upgrade: unable to open '/usr/share/icons/oxygen/base/256x256/apps/akregator.png.dpkg-new': Operation not permitted
UpgradeStatus: No upgrade log present (probably fresh install)