Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-10-08T07:06:09","request-id":"7bb96588-8554-4915-9e95-6f494d539c3d","client-request-id":"7bb96588-8554-4915-9e95-6f494d539c3d"}}}"