Sync to Google Assistant not working

After upgrading to 103.4, when syncing entities to Google Assistant I get the following (after enabling debug logging for google_config) in the logs:

2019-12-26 18:04:19 DEBUG (MainThread) [homeassistant.components.cloud.google_config] Requesting sync
2019-12-26 18:04:19 DEBUG (MainThread) [homeassistant.components.cloud.google_config] Finished requesting syncing: 404

Nothing gets synced - any ideas to get the sync back in working state?

And I see ALOT of these too:

2019-12-26 19:15:13 WARNING (MainThread) [homeassistant.components.cloud.google_config] Error reporting state - 5: Requested entity was not found.
2019-12-26 19:15:14 WARNING (MainThread) [homeassistant.components.cloud.google_config] Error reporting state - 5: Requested entity was not found.
2019-12-26 19:16:00 WARNING (MainThread) [homeassistant.components.cloud.google_config] Error reporting state - 5: Requested entity was not found.
2019-12-26 19:16:09 WARNING (MainThread) [homeassistant.components.cloud.google_config] Error reporting state - 5: Requested entity was not found.
2019-12-26 19:16:12 WARNING (MainThread) [homeassistant.components.cloud.google_config] Error reporting state - 5: Requested entity was not found.
2019-12-26 19:16:13 WARNING (MainThread) [homeassistant.components.cloud.google_config] Error reporting state - 5: Requested entity was not found.
2019-12-26 19:16:15 WARNING (MainThread) [homeassistant.components.cloud.google_config] Error reporting state - 5: Requested entity was not found.
2019-12-26 19:16:20 WARNING (MainThread) [homeassistant.components.cloud.google_config] Error reporting state - 5: Requested entity was not found.
2019-12-26 19:19:23 WARNING (MainThread) [homeassistant.components.cloud.google_config] Error reporting state - 5: Requested entity was not found.
2019-12-26 19:19:29 WARNING (MainThread) [homeassistant.components.cloud.google_config] Error reporting state - 5: Requested entity was not found.
2019-12-26 19:19:30 WARNING (MainThread) [homeassistant.components.cloud.google_config] Error reporting state - 5: Requested entity was not found.
2019-12-26 19:19:31 WARNING (MainThread) [homeassistant.components.cloud.google_config] Error reporting state - 5: Requested entity was not found.
2019-12-26 19:19:41 WARNING (MainThread) [homeassistant.components.cloud.google_config] Error reporting state - 5: Requested entity was not found.

Was chasing another error and stumbled across this a few times:

2019-12-27 19:25:10 ERROR (MainThread) [homeassistant.core] Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/google_assistant/report_state.py", line 45, in async_entity_state_listener
    if entity_data == old_entity.query_serialize():
  File "/usr/src/homeassistant/homeassistant/components/google_assistant/helpers.py", line 434, in query_serialize
    deep_update(attrs, trt.query_attributes())
  File "/usr/src/homeassistant/homeassistant/components/google_assistant/trait.py", line 1366, in query_attributes
    ERR_NOT_SUPPORTED, "Querying state is not supported"
homeassistant.components.google_assistant.error.SmartHomeError: Querying state is not supported

Do you have an update on this?
I also keep seeing Error reporting state - 5: Requested entity was not found for google(I’m using Nabu Casa).

Have a look here: