I had automations notifying me when appliances were finished which worked perfectly until recently. No idea what has changed, it seems to only be the devices connected via Phoscon causing issues.
You should probably post this on the blueprint for the author to review. But also you’ll have to post more info. Like it would help to see the yaml config of the automation you made out of the blueprint. And perhaps the history of the sensor you’re using as a trigger and/or the download of the trace with that error.