FullCloudCharmUpgradeTest.test_200_run_charm_upgrade failed

http://osci:8080/job/zaza_cot_runner/12/console

vault update-status hook failed.

Traceback (most recent call last):
  File "/var/lib/juju/agents/unit-vault-1/.venv/lib/python3.8/site-packages/charms/reactive/__init__.py", line 74, in main
    bus.dispatch(restricted=restricted_mode)
  File "/var/lib/juju/agents/unit-vault-1/.venv/lib/python3.8/site-packages/charms/reactive/bus.py", line 390, in dispatch
    _invoke(other_handlers)
  File "/var/lib/juju/agents/unit-vault-1/.venv/lib/python3.8/site-packages/charms/reactive/bus.py", line 359, in _invoke
    handler.invoke()
  File "/var/lib/juju/agents/unit-vault-1/.venv/lib/python3.8/site-packages/charms/reactive/bus.py", line 181, in invoke
    self._action(*args)
  File "/var/lib/juju/agents/unit-vault-1/charm/reactive/vault_handlers.py", line 764, in publish_ca_info
    chain = vault_pki.get_chain()
  File "/var/lib/juju/agents/unit-vault-1/charm/lib/charm/vault_pki.py", line 77, in get_chain
    client = vault.get_local_client()
  File "/var/lib/juju/agents/unit-vault-1/charm/lib/charm/vault.py", line 249, in get_local_client
    client.auth_approle(app_role_id)
  File "/var/lib/juju/agents/unit-vault-1/.venv/lib/python3.8/site-packages/hvac/v1/__init__.py", line 2072, in auth_approle
    return self.auth('/v1/auth/{0}/login'.format(mount_point), json=params, use_token=use_token)
  File "/var/lib/juju/agents/unit-vault-1/.venv/lib/python3.8/site-packages/hvac/v1/__init__.py", line 1726, in auth
    return self._adapter.auth(
  File "/var/lib/juju/agents/unit-vault-1/.venv/lib/python3.8/site-packages/hvac/adapters.py", line 159, in auth
    response = self.post(url, **kwargs).json()
  File "/var/lib/juju/agents/unit-vault-1/.venv/lib/python3.8/site-packages/hvac/adapters.py", line 103, in post
    return self.request('post', url, **kwargs)
  File "/var/lib/juju/agents/unit-vault-1/.venv/lib/python3.8/site-packages/hvac/adapters.py", line 233, in request
    utils.raise_for_error(response.status_code, text, errors=errors)
  File "/var/lib/juju/agents/unit-vault-1/.venv/lib/python3.8/site-packages/hvac/utils.py", line 39, in raise_for_error
    raise exceptions.InternalServerError(message, errors=errors)
hvac.exceptions.InternalServerError: internal error

Maybe related to https://github.com/hvac/hvac/issues/298 ?