Could not find a version that satisfies the requirement torch

This error message occurs when the PyTorch package is not installed or the installed version does not match the requirement. To resolve this issue, you can try installing PyTorch using the following command:

pip install torch

Make sure that you have a compatible version of Python installed on your system. You can also specify a specific version of PyTorch to install by specifying the version number after "torch". For example, to install PyTorch version 1.9.0, you can use the following command:

pip install torch==1.9.0

I hope this helps! Let me know if you have any other questions.