[keycloak-user] Problem with Github Identity Provider

Hey everyone, i'm having trouble with the Github Identity Provider in Keycloak 4 (using RH-SSO 7.3) where it was working fine with Keycloak 3 (RH-SSO 7.2). Realm, Client and Provider are configured in the same way but login fails and I get this error in the logs: *09:14:19,823 ERROR [org.keycloak.broker.oidc.AbstractOAuth2IdentityProvider] (default task-71) Failed to make identity provider oauth callback: org.keycloak.broker.provider.IdentityBrokerException: No access token available in OAuth server response: {"error":"unauthorized_client","error_description":"The client is not authorized to request a token using this method."}* I've already checked that the credentials are correct and that the realm, client and idp settings are similar to the Keycloak 3 instance. Any Idea where to best start looking? Regards, Peter