Worked on the librenms/librenms repository, focusing on backend development using PHP to address a critical issue in the Graph Time Picker feature. Delivered a targeted bug fix that resolved incorrect URL rendering, which previously caused users to encounter 404 errors when submitting time-based graph filters. The solution involved implementing an explicit echo statement within the selfaction method to ensure accurate URL generation for graph queries. By merging this fix into the main branch, the work improved the reliability of time-based graph operations and reduced user-facing errors, demonstrating attention to detail and a strong grasp of PHP and backend problem-solving.