Worked on enhancing data reliability in the andiwand/acts repository by addressing a critical bug in ROOT file ingestion. Focused on C++ development with an emphasis on robust data handling and file I/O, the work involved implementing a safety check to ensure the input chain was properly initialized and filled before accessing data. This approach prevented potential out-of-bounds access when using m_inputChain->GetV1(), thereby reducing crash risk during batch data processing. The fix improved the stability and integrity of downstream analytics pipelines, ensuring that all entries in the dataset could be accessed reliably throughout the entire data processing workflow.