Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-01-01T09:04:17","request-id":"9ba9b281-0d7b-47db-8b84-7037a396c899","client-request-id":"9ba9b281-0d7b-47db-8b84-7037a396c899"}}}"