Worked on stabilizing the walrus-sites repository for MystenLabs by addressing a critical backend reliability issue. Focused on replacing panics with robust error handling in Rust, specifically targeting invalid glob patterns in ws-resources.json. Updated multiple functions to propagate errors using Result types, ensuring the application fails gracefully rather than crashing. This approach improved error diagnostics and made debugging more straightforward, enhancing maintainability and reliability. The work involved deep engagement with Rust programming and backend development, emphasizing error handling best practices. By fixing a site-builder crash scenario, the changes enabled faster incident response and contributed to a more resilient codebase overall.