Worked on the naymspace/backpex repository to enhance the reliability and developer experience of the router module. Focused on backend development using Elixir, the work involved refactoring error handling for missing routes by introducing multi-line string formatting for exception messages. This approach improved the clarity and readability of errors when routes were not found, making it easier for developers to diagnose and resolve issues. The targeted bug fix reduced ambiguity in exception handling without altering the external API, streamlining the debugging process. Emphasis was placed on robust error handling and API development to support maintainable and efficient backend workflows.