Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-04-17T02:49:54","request-id":"56a485cd-f218-46e1-bd5a-7185630bcaf7","client-request-id":"56a485cd-f218-46e1-bd5a-7185630bcaf7"}}}"