Sonarr won't start on Synology DS215j after update

I’ve been using sonarr on my Synology DS215j some time now and it’s great.

Yesterday I installed an update for sonarr and mono with the Synology Package Manager. I had to stop sonarr from running to do the Mono update. After both updates had finished succussfully sonarr did not start.

If I start it from the package manager it doesn’t start but there is no error message.

I tried uninstalling sonarr and reinstalling it but it’s the same.

The Synology log shows nothing relevant and the sonarr log does not exist.

Sounds a bit like: Upgraded Synology Drive from DS114 to DS115 and now Sonarr won't start - at all

Unfortunately without logs (especially Sonarr logs) there isn’t much we can do.

Today a new Mono and a new sonarr update have been available. I updated both and now sonarr works. Don’t know if the error was in the mono or the sonarr update from yesterday.