Authentication via Keycloak 20 fails with no error message

[aurorasmiles]

After upgrading to Keycloak 20 authentication with wikijs seems broken.
After successfully authenticating in keycloak I get forwarded to a WikiJS error page, and I receive 500 Internal Server error.
There are no additional errors visible in the container logs (even when setting the log_level to silly), keycloak logs, browser console, reverse proxy logs. I have no idea how to start debugging this, since I don't even know what the issue is.

I'm using WikiJS 2.5.289 in Docker, PostgreSQL Database.

Edit: The same issue also seems to happen when using the generic OIDC adapter with Keycloak

[silicht]

Same issue here.

I created the pull request #5808 to fix it.

[aurorasmiles]

thank you very much!