During February 2025, Louis contributed to the columnflow/columnflow repository by addressing a critical bug in the CMS Minimal Analysis Template. He resolved dataset naming inconsistencies and updated jet and muon selection variables, ensuring the template aligned with a validated JSONPOG mirror tag. Using Python and leveraging his skills in bug fixing and configuration management, Louis stabilized the analysis workflow and reduced configuration drift, which improved reproducibility across datasets. His work focused on data analysis and cross-team alignment, validating dataset conventions and external references to maintain consistent template behavior. The depth of his contribution enhanced reliability for CMS minimal analyses.