ReduceSum operator is being replaced with Generic Operator although it seems that it's supported

Hi, I am trying to import a model in onnx format inside Eclipse Aidge:

I have seen that when I load model, Eclipse Aidge says that ReduceSum is not supported and it tries to replace it with Generic operator.

I have seen the aidge_core repo and it seems that ReduceSum is supported. https://gitlab.eclipse.org/eclipse/aidge/aidge_core/-/blob/main/src/operator/ReduceSum.cpp?ref_type=heads

It also seems that aidge_onnx has support to import nodes of type ReduceSum https://gitlab.eclipse.org/eclipse/aidge/aidge_onnx/-/blob/main/aidge_onnx/node_import/onnx_converters/reducesum.py?ref_type=heads

In theses projects, aidge_backend_cpu and aidge_backend_cuda, it seems that in both backends, ReduceSum is supported

https://gitlab.eclipse.org/eclipse/aidge/aidge_backend_cpu/-/blob/main/include/aidge/backend/cpu/operator/ReduceSumImpl_kernels.hpp?ref_type=heads https://gitlab.eclipse.org/eclipse/aidge/aidge_backend_cuda/-/blob/main/include/aidge/backend/cuda/operator/ReduceSumImpl.hpp?ref_type=heads

But my question is that why when I try to load my model in onnx, ReduceSum operator is being replaced by the generic operator.

Can anyone guide me in this regard?

I have also attached the image of my code and it's output in which it can be clearly seen that ReduceSum operator is being replaced by the generic operator.