During July 2025, Ojy9406 focused on backend development and error handling within the apache/gravitino repository, addressing a specific issue in the DistributionDTO component. They corrected the validation error message for bucket numbers to accurately reflect the underlying logic, ensuring that the message now states values must be greater than or equal to -1, matching the actual validation rule. This Java-based change, delivered as a single commit, included updates to related tests and aimed to reduce user confusion and support overhead. The work demonstrated careful attention to detail and contributed to a clearer user experience by aligning API feedback with backend validation.