Error 404 in callback after successful SAML authentication

I have Gitlab CE Omnibus (v14.9) as a Docker container and I’ve been trying to configure SAML authentication via Okta provider. The issue is that, after a successful authentication I get redirected to Gitlab and a 404 error is displayed. I couldn’t find anything in the logs that would help with this.

Configuration:

Screenshots:



Any help with this would be highly appreciated.

This is fixed. The problem was not on Gitlab side but on Okta side (incorrect audience URL).