Worked on the envoyproxy/toolshed repository, focusing on improving the extension checker’s error handling and user guidance. Addressed a bug by updating the error message to reference extensions_schema.yaml, ensuring users are directed to the correct configuration file during extension category validation. This change enhanced the clarity and accuracy of validation messaging, reducing potential confusion and streamlining the troubleshooting process. Demonstrated strong skills in Python, configuration management, and code quality by delivering a precise, traceable fix. The work emphasized careful debugging and schema awareness, contributing to a smoother user experience and potentially lowering support overhead for configuration-related issues.