During April 2025, Hill focused on enhancing the robustness and reliability of the sj26/serena repository, specifically targeting the Language Server and file input/output operations. Hill addressed several backend issues by introducing safer error handling and improving file handling routines in Python. By implementing guarded access to document root properties and adding checks for missing keys in relative path resolution, Hill reduced the risk of runtime errors and improved long-term maintainability. The work also expanded file reading utilities to support multiple encodings, ensuring compatibility across diverse environments. These targeted bug fixes provided a more stable foundation for developer workflows.