Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-03-31T18:10:52","request-id":"dbe167a8-c1d7-4314-8834-35c0d4e1dc23","client-request-id":"dbe167a8-c1d7-4314-8834-35c0d4e1dc23"}}}"