NzbDroneErrorPipeline - API Error: BadRequest :0 is not a valid ID

Sonarr version (exact version): Sonarr Ver. 2.0.0.5338
Mono version: 6.4.0.198 setup in Docker
OS: Linux RAID Server / Synology NAS DS918+ on version DSM 6.2.2-24922 Update 3
Debug logs:

Basic Log: https://pastebin.com/RXnsSYwt
Full Debug Log: https://pastebin.com/5NYHL8dz

Description of issue: Environement is setup on a Synology DS918+ with Docker and LinuxServers.io images. Docker contain Sonarr, Radarr, Transmission OpenVPN, Jackett and Ombi.

When trying to add a TV show from Ombi, Sonarr report the following logs table:

NzbDroneErrorPipeline API Error: BadRequest :0 is not a valid ID
NzbDroneErrorPipeline Invalid request Validation failed: – Invalid Path – Invalid Path
NzbDroneErrorPipeline Invalid request Validation failed: – Invalid Path – Invalid Path

Settings seems to be correct in Ombi page and Sonarr settings. Ombi says he can successfully connect to Sonarr and could grab profiles and root folders (and he’s right, everything is correct). Sonarr can also search and download TV shows correctly and is working as intended. I have tried to remove all parameters contained in Ombi or to change directly the API Key before restarting both of them, but nothing is working. They can’t fully communicate between each others oddly.

/api/Episode?seriesId=0:

OMBI is making a request for all episodes of a series, but passing 0 as the series ID. This is something OMBI will need to take a look at.

Thanks for the answer, I’ll open an issue on the GitHub of Ombi and I’ll come back to leave the solution to this problem when I get it.