Get:1 http://security.ubuntu.com/ubuntu bionic-security InRelease [83.2 kB]
Hit:2 http://gb.archive.ubuntu.com/ubuntu bionic InRelease
Hit:3 http://archive.canonical.com/ubuntu bionic InRelease
Hit:4 http://archive.canonical.com bionic InRelease
Get:5 http://gb.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Hit:6 http://gb.archive.ubuntu.com/ubuntu bionic-backports InRelease
Get:7 http://gb.archive.ubuntu.com/ubuntu bionic/main DEP-11 48x48 Icons [118 kB]
Get:8 http://gb.archive.ubuntu.com/ubuntu bionic/universe DEP-11 48x48 Icons [2,151 kB]
Get:9 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages [157 kB]
Get:10 http://security.ubuntu.com/ubuntu bionic-security/main i386 Packages [127 kB]
Get:11 http://security.ubuntu.com/ubuntu bionic-security/main Translation-en [60.5 kB]
Get:12 http://security.ubuntu.com/ubuntu bionic-security/main DEP-11 48x48 Icons [29 B]
Get:13 http://security.ubuntu.com/ubuntu bionic-security/universe Translation-en [30.6 kB]
Get:14 http://security.ubuntu.com/ubuntu bionic-security/universe DEP-11 48x48 Icons [9,090 B]
Get:15 http://gb.archive.ubuntu.com/ubuntu bionic/multiverse DEP-11 48x48 Icons [8,931 B]
Get:16 http://gb.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages [301 kB]
Get:17 http://gb.archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages [271 kB]
Get:18 http://gb.archive.ubuntu.com/ubuntu bionic-updates/main Translation-en [114 kB]
Get:19 http://gb.archive.ubuntu.com/ubuntu bionic-updates/main DEP-11 48x48 Icons [31.4 kB]
Get:20 http://gb.archive.ubuntu.com/ubuntu bionic-updates/universe Translation-en [76.9 kB]
Get:21 http://gb.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 48x48 Icons [155 kB]
Get:22 http://gb.archive.ubuntu.com/ubuntu bionic-updates/multiverse DEP-11 48x48 Icons [29 B]
Get:23 http://gb.archive.ubuntu.com/ubuntu bionic-backports/universe DEP-11 48x48 Icons [29 B]
Fetched 3,785 kB in 2s (2,066 kB/s)
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