Value cannot be null: file name

[chethan-nichi]

Model Builder Version: In which Model Builder version was the bug encountered?
Ans:- 16.6.0
Visual Studion Version: In which Visual Studio version was the bug encountered?
Ans:- VS 2019 Version - 16.11.5

Bug description
I was unable to generate code after model training is completed

Steps to Reproduce

1. Select scenario as Image classification
2. Select environment as local CPU
3. Select data folder
4. Click train
5. After training is completed an error was encountered

Expected Experience
Expecting code to be generated

Actual Experience
Facing errors as image attached

[beccamc]

@chethan-nichi Can you update to the latest version - 16.7.6.

https://marketplace.visualstudio.com/items?itemName=MLNET.07

[flokie]

Model Builder: 16.8.4.2152201
Visual Studio: 2022 Preview 5
Scenario: Value Prediction

I'm not sure if it's the same problem but it fails after training completed here too.

[vzhuqin]

@beccamc , I also met errors during training on latest main build: 16.8.4.2152201 for all scenarios, could you help to take a look?
Error for Json and Folder type:

Error for File type:

[ffquintella]

Looks like the same issue I have in #1857

[beccamc]

This is fixed via https://github.com/dotnet/machinelearning-tools/pull/1302. @vzhuqin Can you test this?

[beccamc]

@flokie You're on an unreleased version. I think you must be on our candidate preview channel? Can you remove that and go to the public build on the marketplace? Let me know if you want help with that!

[vzhuqin]

Hi @beccamc, not repro this issue on latest main: 16.9.1.2152802, now can complete the training and generate code without any error.

[flokie]

@beccamc I'm using market version for production already. I'm using main version to just testing stuff and also see if there is something new =) As @vzhuqin said, problem is gone on my side now with that latest main version too.