Worked on the vmware/photon repository to address a critical issue affecting VideoLineMap element reporting across all Photon applications. Focused on Java-based model debugging, the developer updated the parsing logic within the CompositionImageEssenceDescriptorModel to restore accurate video reporting, directly improving data reliability for downstream analytics. The solution involved careful error handling and comprehensive regression validation to ensure the fix applied broadly and did not introduce new issues. By aligning changes with the relevant issue and pull request, and updating documentation and comments, the developer enhanced traceability and maintainability. This work demonstrates strong skills in Java, error handling, and software development.