Worked on the duckdb-httpfs repository to enhance user-facing error messaging for URL-based access, focusing on r2:// and s3:// protocols. Using C++ and SQL, implemented changes that display the original user-provided URLs in error messages rather than transformed HTTPS URLs, improving clarity for troubleshooting. Improved the formatting and consistency of S3-related error messages to align with existing httpfs path handling, ensuring uniform error semantics across different access methods. The work consisted of low-risk, text-only modifications that maintained API stability while reducing confusion for users. Emphasized code formatting and robust error handling to support maintainability and reduce support friction.