Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-14T21:31:15","request-id":"2dedfab8-657a-4f76-9966-a36166616d58","client-request-id":"2dedfab8-657a-4f76-9966-a36166616d58"}}}"