Worked on the datacommonsorg/data repository to stabilize data ingestion by addressing a critical bug in the UNEnergy module. Focused on enforcing CSV-only processing, which eliminated a recurring NameError and reduced runtime failures. Enhanced the module’s robustness by improving error handling and introducing warning-level logging for non-CSV inputs, ensuring better observability and maintainability. Updated the download and processing logic to skip non-CSV files, preventing erroneous data handling. The test suite was revised to reflect these changes and guard against regressions. Utilized Python for data processing, error handling, and unit testing, demonstrating a methodical approach to reliability and code quality.