Abhinav Kumar enhanced error handling in the facebookresearch/faiss repository by implementing robust ModuleNotFoundError detection during FAISS loading. Using Python, he wrapped the import process in a try-except block, enabling the system to catch missing module errors and provide users with detailed, instruction-set aware installation guidance. This approach improved build system integration and streamlined the setup experience across diverse hardware configurations. By aligning the new error reporting with existing code conventions, Abhinav ensured maintainability and facilitated future improvements. His work focused on improving observability for initialization failures, ultimately reducing user friction and supporting more efficient troubleshooting and user support.