After updating to core-2021.4.3 an app I haven’t touched in months suddenly is throwing exception in the main AppDaemon log, but the exception is not making it to the Error log.
2021-04-11 09:30:09.448028 WARNING AppDaemon: Invalid callback handle 'None' in cancel_timer() from app occupancy_living
This is ocurring everywhere I’m using this app, I believe (hard to tell given there is no line number to trace) that it’s a helper timer and I’m using the service call to end it.
self.call_service("timer/cancel", entity_id = self._countdown_entity)