Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-29T21:10:02","request-id":"3897c950-8f03-45fb-bc3d-9496cd7234dd","client-request-id":"3897c950-8f03-45fb-bc3d-9496cd7234dd"}}}"