[BUG] libtorch_python.so: undefined symbol: _ZN3c108demangleEPKc about mojo HOT 3 CLOSED

After reinstalling pytorch version '2.3.0+cu121' the error became:

python3.10/site-packages/torch/lib/libc10_cuda.so: undefined symbol: _ZNK3c109Allocator18is_simple_data_ptrERKNS_7DataPtrE

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After reinstalling transformers '4.41.1' the error became

$ mojo roberta.mojo 
Compiling model.    
Done!
Unhandled exception caught during execution: invalid syntax (base_events.py, line 296)
mojo: error: execution exited with a non-zero result: 1

It came from the line

var transformers = Python.import_module("transformers")

Even though I can import transformers in a python3 session.

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Sorry for the delay @hcye2022 and thanks for reporting this!

We published a new version of this page on Friday and I believe it solves this issue:
https://docs.modular.com/max/mojo/get-started

Please reopen this if you still get this error.

Also check out this new code example that is the basis for the tutorial:
https://github.com/modularml/max/tree/main/examples/inference/bert-mojo-torchscript

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