History shows only continous line

Hello,

i have weired history in all of my HA switches, lights and other entities

Running hass.io v.0.89 on an RPi withfollowing in my configuration.yaml

history:
recorder:
  purge_interval: 2
  purge_keep_days: 7

Already searched in the forum but not found any useful which solves my issue.
Thanks in advance for your help!

/ Ralf

I have the same issue. Running hasbian 88.1. I have tried deleting history db, but this still returns. I have noticed that this has been occouring since around 0.74 at least. Also seeing errors in the logs about the DB being locked and suspect this may be linked.