ModuleNotFoundError: No module named 'torch'

This error message indicates that the Python module 'torch' is not installed on your system. 'torch' is the main module for PyTorch, a popular machine learning framework. To fix this error, you need to install PyTorch by running the following command in your terminal:

pip install torch

If you are using Anaconda, you can also install PyTorch using the following command:

conda install pytorch

After installing PyTorch, try running your code again.