I'm not sure where the issue is but I'm unable to get this working. I'm using Authentik for OIDC.

The Configuration URL appears to be correct since when I open it in a browser it is loading this (domain name replaced):
openid-configuration.json

I've triple checked the Config Id and Secret are correct and even removed and regenerated new ones in Authentik to be sure.

Happy to provide any other logs or try anything else suggested.