Newtonsoft.Json Deserialize fails - json.net

Question

After refactoring a class, serializing it with
file.Write(JsonConvert.SerializeObject(this, Formatting.Indented));
works as expected and produces the json file described in this issue.
However, deserializing no longer works.
http://json2csharp.com was able to retrieve the object structure properly.
Source/destination types
public class VinciModel
{
public string Name { get; set; }
public string VidiWorkspaceDir { get; set; }
public string ViDiWorkspaceName { get; set; }
public int NRows { get; set; }
public List<List<object>> Rows { get; set; }
public int NChocolates { get; set; }
public List<StreamInfo> StreamList { get; set; }
public float BlisterWidth { get; set; }
public float BlisterHeight { get; set; }
}
public class Socket
{
public int Index { get; set; }
public string StreamName { get; set; }
public Rectangle ROI { get; set; }
}
public class StreamInfo
{
public string StreamName { get; set; }
public List<Socket> Sockets { get; set; } = new List<Socket>();
}
}
Source/destination JSON
{
"Name": "sdgsd",
"VidiWorkspaceDir": "D:\\VidiProjects\\VidiWorkspace-demo",
"ViDiWorkspaceName": "box2shrink_2",
"NRows": 1,
"Rows": [
[
{
"Index": 0,
"StreamName": "mystream",
"ROI": "0, 0, 5, 51"
},
{
"Index": 0,
"StreamName": "1",
"ROI": "5, 0, 5, 51"
},
{
"Index": 0,
"StreamName": "2",
"ROI": "11, 0, 5, 51"
},
{
"Index": 0,
"StreamName": "mystream",
"ROI": "17, 0, 5, 51"
}
]
],
"NChocolates": 4,
"StreamList": [
{
"StreamName": "mystream",
"Sockets": [
{
"Index": 0,
"StreamName": "mystream",
"ROI": "0, 0, 5, 51"
},
{
"Index": 0,
"StreamName": "mystream",
"ROI": "17, 0, 5, 51"
}
]
},
{
"StreamName": "1",
"Sockets": [
{
"Index": 0,
"StreamName": "1",
"ROI": "5, 0, 5, 51"
}
]
},
{
"StreamName": "2",
"Sockets": [
{
"Index": 0,
"StreamName": "2",
"ROI": "11, 0, 5, 51"
}
]
}
],
"BlisterWidth": 23.0,
"BlisterHeight": 51.0
}
Error
Newtonsoft.Json.JsonReaderException:
'Unexpected character encountered while parsing value: {. Path 'Rows[0]', line 8, position 7.'
Steps to reproduce
using (var file = new System.IO.StreamReader(path))
JsonConvert.DeserializeObject<VinciModel>(file.ReadToEnd());
Worked before the class got refactored
I also tried :
var obj = JsonConvert.DeserializeObject<JObject>(file.ReadToEnd());
and got :
'Error reading string. Unexpected token: StartObject. Path 'Rows[0][0]'.'

Answer 1

The problem was that my class had a non default constructor and no default constructor. The error message is irrelevant.