I had this when I added time and date sensors. In your configuration.yaml, exclude those entities from the log book.

logbook: exclude: entities: - sensor.time - sensor.date - sensor.date_time
Appreciate you taking the time to share this, have a great weekend.

This only hides the entries from the logbook, but they’re still being saved to database taking up disk space.

I would go further and exclude them from the recorder.

Assuming you’ve configured recorder to include them (or all entities).
That’s a safe assumption given the post is about entries in the logbook and that depends on the recorder.