Error in events: NotificationService failed while processing

Sonarr version (exact version): 3.0.4.1118-ls56 by linuxserver.io
Mono version (if Sonarr is not running on Windows): 5.20.1.34
OS: Synology Docker
Debug logs: https://drive.google.com/file/d/1BEWhocXvJPv4dLdxLsTsFMXa2T5-ulaQ/view?usp=sharing
Description of issue: In events I see this error: NotificationService failed while processing [EpisodeFileDeletedEvent]: Sequence contains no elements
Seems to happen once a day. I only started seeing it about last 2 weeks…
Is this something I can correct?
Thank you,
Bryan

I believe this has been filed already, just haven’t looked at it yet.