Worked on the HuggingFace Cookbook repository to enhance the reliability of Jupyter Notebook environments by addressing a critical dependency issue. Focused on dependency management, the developer identified and resolved a missing torchvision package that previously caused import errors with torchvision.transforms. By updating the pip install instructions within the notebooks, they ensured smoother execution and improved reproducibility for users. The work involved hands-on experience with Jupyter Notebook and Python, emphasizing stability over new feature development during the period. This targeted bug fix reduced runtime errors and contributed to a more robust and user-friendly environment for machine learning practitioners using the repository.