Asking for Help
But before you go there and post, be sure your request for help is the best it can be. Clearly describe the problem and briefly describe your setup, including things like your OS/distribution, version of Mono (if not Windows), version of Sonarr, download client and its version. Tell us about what you've tried already, what you've looked at. Use the Logging and Log Files wiki article to turn your logging up to trace, re-create the issue, pastebin the relevant context and include a link to it in your post. Maybe even include some screen shots to highlight the issue.
The more we know, the easier it is to help you.