LoadFromTextFile invalid model throw NullReferenceException

[MaximRouiller]

System information

.NET Core SDK (reflecting any global.json):
Version: 2.2.104
Commit: 73f036d4ac

Runtime Environment:
OS Name: Windows
OS Version: 10.0.17763
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\2.2.104\

Issue

• What did you do?
  Tried to load a model from this Kaggle. My model definition skipped a column index.

• What happened?

NullReferenceException

• What did you expect?

A user-friendly error message.

Source code / logs

public class KingCountyHouseData
{
        [LoadColumn(0)]
        public string Id { get; set; }

        [LoadColumn(1)]
        public string SaleDate { get; set; }
        public float Price { get; set; } // <== this was missed

        [LoadColumn(2)]  // <=== this should be +1
        public float Bedrooms { get; set; }

        [LoadColumn(3)]  // <=== this should be +1
        public float Bathrooms { get; set; }

        [LoadColumn(4)]  // <=== this should be +1
        public float LivingAreaSquareFoot { get; set; }

        [LoadColumn(5)]  // <=== this should be +1
        public float Floors { get; set; }

        [LoadColumn(6)]  // <=== this should be +1
        public bool Waterfront { get; set; }

        //.... more fields below.
}

[TomFinley]

• What did you expect?

A user-friendly error message.

Thank you @MaximRouiller, @yaeldekel has fixed this so it actually complains in a sensible fashion.