Sonarr certificate validation errors

Sonarr version (exact version) : 3.0.3.729
Mono version (if Sonarr is not running on Windows) : 5.20.1.34
OS : Synology NAS
Description of issue :
I started seeing these errors today:

Any thoughts?

That cert is valid until the end of the year. Out of date cert information or TLS 1.2 being disabled due to a low quality or self signed cert causing it to become disabled are two things to look at.

Are you saying it could be an issue with LSIO’s container?

There’s a very small possibility to that, otherwise we’d be flooded with people reporting issues.

Are you using secure connections to your download client(s)?
Are they self signed certs?
Does the issue persist if you use insecure connections?

I see.

No, I’m using insecure HTTP connections to my download client, so no self-signed certs being used. Those logs were from using insecure connections.