Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-12T18:11:29","request-id":"1822b423-3984-4a06-b432-a4efaa94a6ce","client-request-id":"1822b423-3984-4a06-b432-a4efaa94a6ce"}}}"