Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-17T05:51:34","request-id":"f9a9b05b-d3fd-4d2b-b2f9-030f0aa5af65","client-request-id":"f9a9b05b-d3fd-4d2b-b2f9-030f0aa5af65"}}}"