So here you have two errors:

A. ModuleNotFound

The pandas module was not found when running your scripts. This indicates that the dependencies were not installed correctly. Ensure that pandas and other required packages are installed in your virtual environment.

Which basically means that you don't have the package installed. What I encourage you it's:

1. Create a new virtual env and then ensure you have activated it by: source .venv/bin/activate
2. pip install -r requirements.txt
3. Rerun your script/app

B. FileNotFound

The clean_data.py script was trying to load a non-existent file (your_data_file.csv). Ensure that the file paths in your scripts are correct and point to the actual data files.

Where are you running your script? That could be the reason the file it's not being found, try to look at your working directory and pass the correct path.