Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-03-24T16:40:12","request-id":"bca6fbec-c211-49fc-b0cc-9f96c266063f","client-request-id":"bca6fbec-c211-49fc-b0cc-9f96c266063f"}}}"