Comment 16 for bug 1927029

snap --version:
----------------------------
$ snap --version
snap 2.49.2
snapd 2.49.2
series 16
ubuntu 16.04
kernel 4.4.0-145-generic
----------------------------

Tried the steps here:

$ sudo ua disable livepatch
Livepatch is not currently enabled
See: sudo ua status
Unexpected error(s) occurred.
For more details, see the log: /var/log/ubuntu-advantage.log
To file a bug run: ubuntu-bug ubuntu-advantage-tools

$ sudo snap remove --purge livepatch
snap "livepatch" is not installed

$ sudo ua enable livepatch
One moment, checking your subscription first
Unable to configure Livepatch: Failed running command '/snap/bin/canonical-livepatch config remote-server=https://livepatch.canonical.com' [exit(1)]. Message: 2021/05/10 18:04:55 error executing config: Livepatchd error: Couldn't setup system logger.

ERROR: Unable to configure Livepatch: Failed running command '/snap/bin/canonical-livepatch config remote-server=https://livepatch.canonical.com' [exit(1)]. Message: 2021/05/10 18:04:55 error executing config: Livepatchd error: Couldn't setup system logger.

Unexpected error(s) occurred.
For more details, see the log: /var/log/ubuntu-advantage.log
To file a bug run: ubuntu-bug ubuntu-advantage-tools