Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-15T15:09:36","request-id":"241230dd-74da-4d05-87f6-8a5cd5527efe","client-request-id":"241230dd-74da-4d05-87f6-8a5cd5527efe"}}}"