Entity unknown.unknown=unknown

Hi all,
my log is a mess.
Starting with the most relevant, I have an unknown.unknown entity generating a repeating error and if I search for it among all my entities, I find nothing like this one.
Log reports:

Error doing job: Task exception was never retrieved (None)
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 931, in async_update_ha_state
    raise RuntimeError(f"Attribute hass is None for {self}")
RuntimeError: Attribute hass is None for <entity unknown.unknown=unknown>

I tried searching for the file “/usr/src/homeassistant/homeassistant/helpers/entity.py” to see if I could collect some more information about line 931, but there’s nothing inside /usr/src/.
Asking chatGPT didn’t bring to a suitable solution and I didn’t find a topic here talking about unknown.unknown entity or I didn’t realize it, so…
I have no clue where to start from.

My setup:
latest supervised HAOS on a RPI5+M2. ESPHome, openWakeWord, Whisper, Piper, DukDNS, NGINX SSL proxy, Samba share, Terminal and SSH and VLC configured and working add-ons.
HACS and few integrations installed: LocalTuya, Xiaomi Cloud Map Extractor, Daikin Residential Controller, Govee LAN Control, Meross LAN and Kodi Media Sensors.

Could somebody help?
Thanks a lot