Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-02-15T05:26:13","request-id":"5fa464e1-ea6c-4fa9-9865-caee57eaef9e","client-request-id":"5fa464e1-ea6c-4fa9-9865-caee57eaef9e"}}}"