root@ubuntempmigration:~# apt update
Hit:1 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:2 http://archive.ubuntu.com/ubuntu bionic InRelease

(appstreamcli:8336): GLib-CRITICAL **: g_strchug: assertion 'string != NULL' failed

(appstreamcli:8336): GLib-CRITICAL **: g_strchomp: assertion 'string != NULL' failed
AppStream cache update completed, but some metadata was ignored due to errors.