Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-06-05T07:30:48","request-id":"be46bb1d-c90b-44a9-98dc-447aefdeba82","client-request-id":"be46bb1d-c90b-44a9-98dc-447aefdeba82"}}}"