During June 2025, Bo Wang focused on strengthening backend reliability and security for the renovate-bot/apache-_-polaris repository. He addressed a critical bug in the Polaris Server by redesigning error handling for unbootstrapped databases, ensuring that internal metadata is no longer exposed in error responses. Using Java and leveraging his expertise in backend development and exception handling, Bo mapped generic persistence errors to HTTP 500 responses and introduced automated regression tests to validate this behavior. His work prioritized risk reduction and customer trust by improving test coverage and minimizing sensitive information leakage, resulting in a more resilient and compliant server startup process.