OIDC Redirect URI mismatch with Google OAuth

[orakult]

Description

Good afternoon. Thank you for the wonderful Headplane.
Please help me figure out why I'm getting error 400 when logging in through OIDC (Google).
Login to Headscale via OIDC with the same ID and Secret works perfectly.

My Authorized redirect URIs

compose.yaml
config - headscale.yaml
config - headplane.yaml

Headplane Version

latest (12.12.2025)

Headscale Version

letest (12.12.2025)

[tale]

In the browser if you check the Network tab in DevTools you'll be able to see the URL that Headplane is requesting as the callback/redirect URI. Make sure that it matches correctly with what's been provided to Google. Also I'm not really sure what version of Headplane you are using so I can't really help beyond that.