During November 2024, David Weber focused on enhancing the reliability of ROOT data ingestion within the andiwand/acts repository. He addressed a critical bug by implementing a safety check that ensures the input chain is properly initialized and filled before any data access, specifically when using m_inputChain->GetV1() across all entries. This C++ solution improved the robustness of batch data processing by preventing out-of-bounds access, thereby reducing the risk of crashes and data integrity issues. David’s work demonstrated careful attention to data handling and file I/O, contributing to a more stable and reliable analytics pipeline for ROOT file ingestion.