'Scan' operator runtime session error?

[shashwat1198]

Hello,

I have been trying to run an onnxruntime inference session for the 'Scan' operator in onnx using the addition example given in the documentation : https://github.com/onnx/onnx/blob/main/docs/Operators.md#Scan

When I try to run the session, I get the following error:

Can anyone point me as to how I can solve this issue? The model also passes the checker test and I don't see any error there.

Any help would be highly appreciated,
Shashwat

[xadupre]

How did you build your graph? These examples are of the onnx backend test and tested in onnx CI and onnxruntime CI (https://github.com/onnx/onnx/blob/main/onnx/test/test_backend_onnxruntime.py).