Here is the tail of server.log in Keycloak:
2022-11-16 10:28:02,042 WARN [org.keycloak.authentication.DefaultAuthenticationFlow] (default task-65) REQUIRED and ALTERNATIVE elements at same level! Those alternative executions will be ignored: [auth-cookie, identity-provider-redirector]
2022-11-16 10:28:23,677 WARN [org.keycloak.authentication.DefaultAuthenticationFlow] (default task-65) REQUIRED and ALTERNATIVE elements at same level! Those alternative executions will be ignored: [auth-cookie, identity-provider-redirector]
2022-11-16 12:10:22,342 WARN [org.keycloak.events] (default task-70) type=REFRESH_TOKEN_ERROR, realmId=master, clientId=security-admin-console, userId=null, ipAddress=172.29.2.20, error=invalid_token, grant_type=refresh_token, client_auth_method=client-secret
2022-11-16 12:18:24,538 WARN [org.keycloak.authentication.DefaultAuthenticationFlow] (default task-70) REQUIRED and ALTERNATIVE elements at same level! Those alternative executions will be ignored: [auth-cookie, identity-provider-redirector]
2022-11-16 12:18:32,730 WARN [org.keycloak.authentication.DefaultAuthenticationFlow] (default task-70) REQUIRED and ALTERNATIVE elements at same level! Those alternative executions will be ignored: [auth-cookie, identity-provider-redirector]
2022-11-16 12:40:30,680 WARN [org.keycloak.authentication.DefaultAuthenticationFlow] (default task-70) REQUIRED and ALTERNATIVE elements at same level! Those alternative executions will be ignored: [auth-cookie, identity-provider-redirector]
2022-11-16 12:40:31,934 WARN [org.keycloak.authentication.DefaultAuthenticationFlow] (default task-70) REQUIRED and ALTERNATIVE elements at same level! Those alternative executions will be ignored: [auth-cookie, identity-provider-redirector]
2022-11-16 12:40:32,098 WARN [org.keycloak.authentication.DefaultAuthenticationFlow] (default task-70) REQUIRED and ALTERNATIVE elements at same level! Those alternative executions will be ignored: [auth-cookie, identity-provider-redirector]
2022-11-16 12:40:32,244 WARN [org.keycloak.authentication.DefaultAuthenticationFlow] (default task-70) REQUIRED and ALTERNATIVE elements at same level! Those alternative executions will be ignored: [auth-cookie, identity-provider-redirector]
2022-11-16 12:40:39,833 WARN [org.keycloak.authentication.DefaultAuthenticationFlow] (default task-70) REQUIRED and ALTERNATIVE elements at same level! Those alternative executions will be ignored: [auth-cookie, identity-provider-redirector]
Thank you Giovanni!
Matteo