Auth-Unauthorized ip when accessing the GUI (v2.0)

Sonarr version (exact version):
Mono version (if Sonarr is not running on Windows):
OS: Ubuntu / Docker / LSIO
Debug logs: Unnecessary
Description of issue:

Thousands of the below entries appear in Sonarr logs while running in Docker container.
On the surface it looks like this issue which went unresolved over 2 months ago.
The error suggests that the Sonarr Docker container operates behind an niginx reverse proxy
It appears as if Sonarr or its container is unsuccessfully attempting to access itself
Specifically it’s trying to access Sonarr’s missing and queue pages through the reverse proxy

On further investigation, Heimdall is running on the Nginx reverse proxy.
Heimdall queries the Sonarr Docker container for missing and in-queue releases

Heimdall had the wrong API Key for Sonarr
Upon entering the correct API Key, the error message disappeared.

This exactly thing was occurring with Lidarr and Radarr containers.
The errors existed several months back when I checked on all apps.

Just an FYI for anyone else running into this.

Info | Auth | Auth-Unauthorized ip url ''
Info | Auth | Auth-Unauthorized ip url ''