这样做时，sudo apt-get upgrade我收到此错误。拜托，谁能帮我摆脱这个错误...
Err:29 http://security.ubuntu.com/ubuntu xenial-security/restricted amd64 DEP-11 Metadata
Could not open file /var/lib/apt/lists/partial/security.ubuntu.com_ubuntu_dists_xenial-security_restricted_dep11_Components-amd64.yml.gz - open (13: Permission denied)
Hit:42 http://security.ubuntu.com/ubuntu xenial-security/multiverse amd64 DEP-11 Metadata
Ign:45 http://security.ubuntu.com/ubuntu xenial-security/multiverse DEP-11 64x64 Icons
Get:49 http://in.archive.ubuntu.com/ubuntu xenial-updates/universe i386 Packages [516 kB]
Get:50 http://in.archive.ubuntu.com/ubuntu xenial-updates/universe Translation-en [220 kB]
Get:51 http://in.archive.ubuntu.com/ubuntu xenial-updates/universe amd64 DEP-11 Metadata [173 kB]
Ign:52 http://in.archive.ubuntu.com/ubuntu xenial-updates/universe DEP-11 64x64 Icons
Get:53 http://in.archive.ubuntu.com/ubuntu xenial-updates/multiverse amd64 Packages [15.8 kB]
Get:54 http://in.archive.ubuntu.com/ubuntu xenial-updates/multiverse i386 Packages [15.0 kB]
Get:55 http://in.archive.ubuntu.com/ubuntu xenial-updates/multiverse Translation-en [7,644 B] …以 root 身份更新时出现错误。在终端中显示以下错误后更新日志。
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
我按照这个答案并执行了sudo apt install appstream/xenial-backports.
我的appstream包裹已经更新：-
$ appstreamcli --version
AppStream CLI tool version: 0.10.6
之后，强制刷新缓存数据。我收到以下错误：-
$ sudo appstreamcli refresh --force
AppStream system cache was updated, but problems were found: Metadata …