Unable to convert tflite to kmodel

[wick952]

D:\0002\ncc-win7-x86_64>ncc -i tflite -o k210model --dataset ../sign_train ../sign_model.tflite ../sign_model.kmodel
Fatal: Nullable object must have a value.
System.InvalidOperationException: Nullable object must have a value.
at System.Nullable1.get_Value() at NnCase.Converter.Converters.TfLiteToGraphConverter.ConvertReshape(Operator op) in D:\Work\Repository\nncase\src\NnCase.Converter\Converters\TfLiteToGraphConverter.cs:line 199 at NnCase.Converter.Converters.TfLiteToGraphConverter.ConvertOperator(Operator op) in D:\Work\Repository\nncase\src\NnCase.Converter\Converters\TfLiteToGraphConverter.cs:line 97 at System.Linq.Enumerable.SelectEnumerableIterator2.ToList()
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at NnCase.Converter.Converters.TfLiteToGraphConverter.Convert() in D:\Work\Repository\nncase\src\NnCase.Converter\Converters\TfLiteToGraphConverter.cs:line 34
at NnCase.Cli.Program.Main(String[] args) in D:\Work\Repository\nncase\src\NnCase.Cli\Program.cs:line 113
at NnCase.Cli.Program.

(String[] args)

How do I solve this problem? Thank you and hope to hear from you soon!

[code2k13]

I have seen this error before. What board are you using. For K210 I had to switch to nncase 0.5 beta. Also note that you make have to downgrade to Keras 2. Check out this article : https://ashishware.com/2024/08/25/k210_fashion_mnist/ where I have documented my experience with all this