Transformers4Rec Tutorial: Triton Inference Server Failed to initialize Python stub + ModuleNotFoundError: No module named 'nvtabular', 'merlin'

[zwei2016]

Hi everyone

I love the Transformers4Rec and try to learn through the online tutorial. I followed the

https://github.com/NVIDIA-Merlin/Transformers4Rec/tree/main/examples/getting-started-session-based

In the 3rd notebook : 03-serving-session-based-model-torch-backend.ipynb, I tried to launch the Triton Inference Server, but failed.

The error message contains:

Failed to initialize Python stub + ModuleNotFoundError: No module named 'nvtabular', 'merlin'

I deployed Triton Inference Server through NGC container, as described in https://github.com/triton-inference-server/server, the Triton server returned the expected result as in "Serve a Model in 3 Easy Steps". I am not sure if I miss something when I followed the Transformers4Rec tutorial, could you please give me a clue?

By the way, I also report the details here:

triton-inference-server/server#7158

Thank you in advance

Wei