KeycloakUserProvider: ClassCastException for StandardLogin to SSOLogin

Hi,

I am trying to use the KeycloakUserProvider in the CIB Seven webclient. I could easily configure the integrated camunda web client via the SPRING_SECURITY_OAUTH2_CLIENT which worked for me. Now I am trying to do the same for the new CIB Seven webclient via CIBSEVEN_WEBCLIENT. But when i try to log in I get the following error:

java.lang.ClassCastException: class org.cibseven.webapp.auth.rest.StandardLogin cannot be cast to class org.cibseven.webapp.auth.sso.SSOLogin (org.cibseven.webapp.auth.rest.StandardLogin and org.cibseven.webapp.auth.sso.SSOLogin are in unnamed module of loader org.springframework.boot.loader.launch.LaunchedClassLoader @3e3abc88)

Is my configuration invalid or do I miss something?

This is my docker-compose.yaml file with my custom configuration:

version: '3.8'

services:
  cibseven:
    image: cibseven/cibseven:run-2.1.0-SNAPSHOT
    container_name: cibseven
    command: ["./cibseven.sh", "--oauth2", "--webapps", "--example", "--rest"]
    ports:
      - "8080:8080"
    depends_on:
      - postgres
    environment:

      # Database configuration
      - DB_DRIVER=org.postgresql.Driver
      - DB_URL=jdbc:postgresql://postgres:5432/cibseven
      - DB_USERNAME=cibseven
      - DB_PASSWORD=cibseven
      - DB_SCHEMA=public
      
      # OAuth2 configuration for camunda webclient (working)
      - SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_KEYCLOAK_PROVIDER=keycloak
      - SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_KEYCLOAK_CLIENT_ID=test-cib-seven
      - SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_KEYCLOAK_CLIENT_SECRET=<SECRET>
      - SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_KEYCLOAK_SCOPE=openid,profile,email
      - SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_KEYCLOAK_AUTHORIZATION_GRANT_TYPE=authorization_code
      - SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_KEYCLOAK_REDIRECT_URI=http://0.0.0.0:8080/login/oauth2/code/test-cib-seven
      - SPRING_SECURITY_OAUTH2_CLIENT_PROVIDER_KEYCLOAK_ISSUER_URI=https://<MY_DOMAIN>/realms/<MY_REALM>

      # OAuth2 configuration for CIB Seven webclient (not working)
      - CIBSEVEN_WEBCLIENT_USER_PROVIDER=org.cibseven.webapp.auth.KeycloakUserProvider
      - CIBSEVEN_WEBCLIENT_SSO_ENDPOINTS_TOKEN=https://<MY_DOMAIN>/realms/<MY_REALM>/protocol/openid-connect/token
      - CIBSEVEN_WEBCLIENT_SSO_ENDPOINTS_JWKS=https://<MY_DOMAIN>/realms/<MY_REALM>/protocol/openid-connect/certs
      - CIBSEVEN_WEBCLIENT_SSO_ENDPOINTS_USER=https://<MY_DOMAIN>/realms/<MY_REALM>protocol/openid-connect/userinfo
      - CIBSEVEN_WEBCLIENT_SSO_CLIENTID=test-cib-seven
      - CIBSEVEN_WEBCLIENT_SSO_CLIENTSECRET=<SECRET>
      - CIBSEVEN_WEBCLIENT_SSO_USERIDPROPERTY=id
      - CIBSEVEN_WEBCLIENT_SSO_USERNAMEPROPERTY=preferred_username
      - CIBSEVEN_WEBCLIENT_AUTHENTICATION_JWTSECRET=<SECRET>

      
  postgres:
    image: postgres:14
    container_name: cibseven-postgres
    ports:
      - "5432:5432"
    environment:
      - POSTGRES_USER=cibseven
      - POSTGRES_PASSWORD=cibseven
      - POSTGRES_DB=cibseven
    volumes:
      - postgres-data:/var/lib/postgresql/data
    command: postgres -c max_connections=100 -c shared_buffers=256MB

volumes:
  postgres-data: