Worked on improving the reliability and maintainability of the torchrec repository by addressing a key backend issue related to library loading. Focused on Python-based error handling, the developer removed deprecated usage of torch._running_with_deploy() and introduced explicit RuntimeError handling within the load_library function. This approach ensured that failures when loading optional libraries now produce clear, actionable error messages rather than silent failures, streamlining the debugging process for other developers. The update not only future-proofed the integration by eliminating deprecated APIs but also enhanced code hygiene and simplified ongoing maintenance, demonstrating a careful, targeted approach to backend development and robustness.