7ffeed1eb000-7ffeed1ed000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
Aborted (core dumped)
正在讀取軟體包列表… 完成
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 > /dev/null; fi’
E: Sub-process returned an error code

sudo apt-get purge libappstream3
或者
sudo apt-get remove libappstream3
執行完後再次執行sudo apt-get update命令就正常了。