AppStream system cache was updated, but problems were found: Metadata files have errors: /var/cache/app-info/xmls/fwupd.xml Reading package lists... Done E: Problem executing scripts APT::Update::Post-Invoke-Success 'if /usr/bin/test -w /var/cache/app-info -a -e /usr/bin/appstreamcli; then appstreamcli refresh-cache > /dev/null; fi' E: Sub-process returned an error code

[Sugat Bajracharya]

AppStream system cache was updated, but problems were found: Metadata files have errors: /var/cache/app-info/xmls/fwupd.xml
Reading package lists... Done
E: Problem executing scripts APT::Update::Post-Invoke-Success 'if /usr/bin/test -w /var/cache/app-info -a -e /usr/bin/appstreamcli; then appstreamcli refresh-cache > /dev/null; fi'
E: Sub-process returned an error code

##############################
after doing "sudo appstreamcli refresh --force"

AppStream system cache was updated, but problems were found: Metadata files have errors: /var/cache/app-info/xmls/fwupd.xml

message was shown and I havent found a solution to this.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: appstream 0.10.6-1~ubuntu16.04.2
ProcVersionSignature: Ubuntu 4.15.0-32.35~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-32-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Aug 21 19:03:49 2018
InstallationDate: Installed on 2018-06-07 (74 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
SourcePackage: appstream
UpgradeStatus: No upgrade log present (probably fresh install)

[Matthias Klumpp (ximion)]

This is a bug in fwupd/the LVFS data that AFAIK was already fixed there.

[Mario Limonciello (superm1)]

Duplicate of https://launchpad.net/bugs/1780442 perhaps