ModuleNotFoundError: No module named 'd2l'

This error message indicates that Python cannot find the module named "d2l" that the code is trying to import. It is possible that the module is not installed in your Python environment or it is installed in a different location.

To resolve this error, you can try installing the "d2l" module using pip, which is a package installer for Python. Open a terminal or command prompt and type the following command:

pip install d2l

This will download and install the "d2l" module and its dependencies in your Python environment. After the installation is complete, you should be able to import the module without any issues.