Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-14T05:23:30","request-id":"1be1fc3c-11dd-405b-9269-a5cf227c029d","client-request-id":"1be1fc3c-11dd-405b-9269-a5cf227c029d"}}}"