Azure statuc web app custom identity provider logout isssue

Hello, I have setup an azure static web app with a custom identity provider.
I am able to login but the logout fails at the identity provider with the error:
Bad request: Provided post_logout_redirect_uri could not be validated when no valid client_id was given.
I've whitelisted the logout url in the same way i whitelisted the login url in the identity provider.
And to logout just like login I go to /.auth/logout.
My guess is that the id_token is not provided to the identity provder but I don't know how to make that happen.
Do you have any suggestions on how I can pass the id_token or if there is something I haven't configured? /// Flyttad från Community Center / Diskutera Q&A-webbplatsen / Kom igång på Q&A ///