sd_textual_inversion_training.ipynb: Issue with "import required libraries"

[redw04]

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Hi,

When trying to run the TI Colab, there seems to be an issue with the Xformers libraries. When running the "import required libraries" cell, I get the following error:

WARNING:xformers:WARNING: /usr/local/lib/python3.8/dist-packages/xformers/_C.so: undefined symbol: _ZNK3c104impl13OperatorEntry20reportSignatureErrorENS0_12CppSignatureE
Need to compile C++ extensions to get sparse attention support. Please run python setup.py build develop

/usr/local/lib/python3.8/dist-packages/xformers/_C.so: undefined symbol: _ZNK3c104impl13OperatorEntry20reportSignatureErrorENS0_12CppSignatureE

The problem is, when I navigate to the path mentioned in the error, this is no /_C.so folder.

Any idea how to fix this? Training is impossible without this step.

Thank you!