below is the log from "sudo journalctl -u snapd.autoimport.service"
-- Logs begin at Tue 2020-09-01 07:19:42 UTC, end at Tue 2020-09-01 07:23:31 UTC. --
systemd[1]: Starting Auto import assertions from block devices...
snap[1358]: cmd_auto_import.go:183: imported /run/mnt/ubuntu-boot/auto-import.assert
snap[1358]: cmd_auto_import.go:183: imported /run/mnt/ubuntu-seed/auto-import.assert
snap[1358]: cmd_auto_import.go:183: imported /var/lib/snapd/seed/auto-import.assert
snap[1358]: cmd_auto_import.go:183: imported /writable/system-data/var/lib/snapd/seed/auto-import.assert
snap[1358]: error: cannot create user: device already managed
systemd[1]: snapd.autoimport.service: Main process exited, code=exited, status=1/FAILURE
systemd[1]: snapd.autoimport.service: Failed with result 'exit-code'.
systemd[1]: Failed to start Auto import assertions from block devices.
below is the log from "sudo journalctl -u snapd.autoimpor t.service"
-- Logs begin at Tue 2020-09-01 07:19:42 UTC, end at Tue 2020-09-01 07:23:31 UTC. -- import. go:183: imported /run/mnt/ ubuntu- boot/auto- import. assert import. go:183: imported /run/mnt/ ubuntu- seed/auto- import. assert import. go:183: imported /var/lib/ snapd/seed/ auto-import. assert import. go:183: imported /writable/ system- data/var/ lib/snapd/ seed/auto- import. assert t.service: Main process exited, code=exited, status=1/FAILURE t.service: Failed with result 'exit-code'.
systemd[1]: Starting Auto import assertions from block devices...
snap[1358]: cmd_auto_
snap[1358]: cmd_auto_
snap[1358]: cmd_auto_
snap[1358]: cmd_auto_
snap[1358]: error: cannot create user: device already managed
systemd[1]: snapd.autoimpor
systemd[1]: snapd.autoimpor
systemd[1]: Failed to start Auto import assertions from block devices.