Newtonsoft.Json Serialization Exception

    public virtual async Task<T> Get<T>(string url) where T : class
    {
        using var client = new HttpClient();

        var stringResult = await client.GetStringAsync(url);
        return JsonConvert.DeserializeObject<T>(stringResult, new JsonSerializerSettings{NullValueHandling = NullValueHandling.Ignore});
    }

    public virtual async Task<T> Get<T>(string url) where T : class
    {
        using var client = new HttpClient();

        var stringResult = await client.GetStringAsync(url);
        return JsonConvert.DeserializeObject<T>(stringResult, new JsonSerializerSettings{NullValueHandling = NullValueHandling.Ignore});
    }

namespace ReactionGame
{
    public class Highscore
    {
        [JsonProperty]
        public string Name { get; set; }
        [JsonProperty]
        public long Time { get; set; }

        public override string ToString()
        {
            return Name + "  -  " + Time;
        }

        [JsonConstructor]
        public Highscore(string name, long time)
        {
            Name = name;
            Time = time;
        }
    }
}

namespace ReactionGame
{
    public class Highscore
    {
        [JsonProperty]
        public string Name { get; set; }
        [JsonProperty]
        public long Time { get; set; }

        public override string ToString()
        {
            return Name + "  -  " + Time;
        }

        [JsonConstructor]
        public Highscore(string name, long time)
        {
            Name = name;
            Time = time;
        }
    }
}