Bo Wang focused on strengthening backend reliability and security for the renovate-bot/apache-_-polaris repository during June 2025. He addressed a critical bug in Polaris Server’s error handling, ensuring that unbootstrapped database scenarios no longer exposed sensitive backend metadata in error responses. Using Java and leveraging his expertise in database management and exception handling, Bo refactored persistence logic so that generic errors now correctly map to HTTP 500 responses. He also introduced automated regression tests to validate these changes, prioritizing risk reduction and customer trust. The work emphasized stability and compliance, with no new features released during this period.