Worked on the volcengine/verl repository to enhance backend stability by addressing a processor crash scenario in the image processing pipeline. Applied Python defensive programming techniques to introduce a check for missing image_processor instances, preventing attribute errors that previously led to crashes during rollout. This solution mirrored an established pattern from the rollout schemas module, ensuring consistency across the codebase. The update focused on robust error handling and adherence to repository pull request standards, including naming conventions and cross-module consistency. By reducing the crash surface, the work contributed to smoother deployments and improved production uptime, demonstrating strong backend development skills in Python.