Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-02-20T23:00:06","request-id":"a89df4a7-d6a8-43d8-a972-5d00c1a62e61","client-request-id":"a89df4a7-d6a8-43d8-a972-5d00c1a62e61"}}}"