Random vault error

I deployed OpenStack using juju, via https://github.com/openstack-charmers/openstack-bundles/blob/master/stable/openstack-base/bundle.yaml
The Cloud has been working for couple days. It’s been deployed: 2021-03-09 21:23:17
When I looked at juju status around 2021-03-11 15:46:38 I found out that juju status is reporting error on vault/0 unit.

vault/0*                     error     idle   24       8200/tcp           hook failed: "update-status"
  vault-mysql-router/0*      active    idle                            Unit is ready

Please see attached logs from /var/log/juju/unit-vault-0.log
The event which caused outage was started around 2021-03-11 03:47:20

I finally managed to fix that by running juju resolved vault/0, but I want to understand what caused this issue. I thought that might be caused by autoupdate to vault snap, but it doesn’t seem to be the case.

I’m out of ideas what could go wrong.

This seems to be a juju issue. I submitted a bug: Bug #1918718 “vault crashed without any interaction with user” : Bugs : juju

I think I misunderstood what happened here.
Please disregard this post.