core: recorder error every few seconds

The problem

Every few seconds an error like this occurs

Environment

arch	armv7l
chassis
dev	false
docker	true
docker_version	19.03.12
hassio	true
host_os	Raspbian GNU/Linux 10 (buster)
installation_type	Home Assistant Supervised
os_name	Linux
os_version	5.4.51-v7l+
python_version	3.8.5
supervisor	247
timezone	Europe/Bucharest
version	0.116.0
virtualenv	false

Problem-relevant configuration.yaml

Traceback/Error logs

File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 497, in _commit_event_session
    self.event_session.expunge(dbstate)
  File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 1854, in expunge
    raise sa_exc.InvalidRequestError(
sqlalchemy.exc.InvalidRequestError: Instance  is not present in this Session
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 442, in _commit_event_session_or_retry
    self._commit_event_session()
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 497, in _commit_event_session
    self.event_session.expunge(dbstate)
  File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 1854, in expunge
    raise sa_exc.InvalidRequestError(
sqlalchemy.exc.InvalidRequestError: Instance  is not present in this Session
2020-10-07 21:40:29 ERROR (Recorder) [homeassistant.components.recorder] Error saving events: Instance <States at 0xadc72e68> is not present in this Session
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 442, in _commit_event_session_or_retry
    self._commit_event_session()
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 497, in _commit_event_session
    self.event_session.expunge(dbstate)
  File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 1854, in expunge
    raise sa_exc.InvalidRequestError(
sqlalchemy.exc.InvalidRequestError: Instance  is not present in this Session
2020-10-07 21:40:29 ERROR (Recorder) [homeassistant.components.recorder] Error executing query: Instance <States at 0xadc72e68> is not present in this Session
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 442, in _commit_event_session_or_retry
    self._commit_event_session()
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 497, in _commit_event_session
    self.event_session.expunge(dbstate)
  File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 1854, in expunge
    raise sa_exc.InvalidRequestError(
sqlalchemy.exc.InvalidRequestError: Instance  is not present in this Session
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 442, in _commit_event_session_or_retry
    self._commit_event_session()
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 497, in _commit_event_session
    self.event_session.expunge(dbstate)
  File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 1854, in expunge
    raise sa_exc.InvalidRequestError(
sqlalchemy.exc.InvalidRequestError: Instance  is not present in this Session
2020-10-07 21:40:30 ERROR (Recorder) [homeassistant.components.recorder] Error saving events: Instance <States at 0xadc72e68> is not present in this Session
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 442, in _commit_event_session_or_retry
    self._commit_event_session()
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 497, in _commit_event_session
    self.event_session.expunge(dbstate)
  File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 1854, in expunge
    raise sa_exc.InvalidRequestError(
sqlalchemy.exc.InvalidRequestError: Instance  is not present in this Session
2020-10-07 21:40:30 ERROR (Recorder) [homeassistant.components.recorder] Error executing query: Instance <States at 0xadc72e68> is not present in this Session
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 442, in _commit_event_session_or_retry
    self._commit_event_session()
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 497, in _commit_event_session
    self.event_session.expunge(dbstate)
  File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 1854, in expunge
    raise sa_exc.InvalidRequestError(
sqlalchemy.exc.InvalidRequestError: Instance  is not present in this Session
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 442, in _commit_event_session_or_retry
    self._commit_event_session()
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 497, in _commit_event_session
    self.event_session.expunge(dbstate)
  File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 1854, in expunge
    raise sa_exc.InvalidRequestError(
sqlalchemy.exc.InvalidRequestError: Instance  is not present in this Session
2020-10-07 21:40:31 ERROR (Recorder) [homeassistant.components.recorder] Error executing query: Instance <States at 0xadc72e68> is not present in this Session
2020-10-07 21:40:31 ERROR (Recorder) [homeassistant.components.recorder] Error saving events: Instance <States at 0xadc72e68> is not present in this Session
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 442, in _commit_event_session_or_retry
    self._commit_event_session()
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 497, in _commit_event_session
    self.event_session.expunge(dbstate)
  File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 1854, in expunge
    raise sa_exc.InvalidRequestError(
sqlalchemy.exc.InvalidRequestError: Instance  is not present in this Session
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 442, in _commit_event_session_or_retry
    self._commit_event_session()
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 497, in _commit_event_session
    self.event_session.expunge(dbstate)
  File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 1854, in expunge
    raise sa_exc.InvalidRequestError(
sqlalchemy.exc.InvalidRequestError: Instance  is not present in this Session
2020-10-07 21:40:32 ERROR (Recorder) [homeassistant.components.recorder] Error executing query: Instance <States at 0xadc72e68> is not present in this Session
2020-10-07 21:40:32 ERROR (Recorder) [homeassistant.components.recorder] Error saving events: Instance <States at 0xadc72e68> is not present in this Session
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 442, in _commit_event_session_or_retry
    self._commit_event_session()
  File "/usr/src/homeassistant/homeassistant/components/recorder/__init__.py", line 497, in _commit_event_session
    self.event_session.expunge(dbstate)
  File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 1854, in expung

Additional information