Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-02-06T01:37:29","request-id":"25e7a8c0-d1f7-405d-8f43-9e4eaf3ad9d3","client-request-id":"25e7a8c0-d1f7-405d-8f43-9e4eaf3ad9d3"}}}"