Worked on improving the stability and correctness of the RZ vector Laplacian in the WarpX repository, focusing on simulations using cylindrical coordinates. Addressed a critical division-by-zero issue at the coordinate origin by implementing origin-specific handling and ensuring proper application of hyper-resistivity. This fix reduced numerical artifacts and improved simulation reliability and accuracy, particularly at the origin where such issues are most pronounced. Collaborated closely with other contributors, demonstrating thorough code review and clear co-authorship. The work leveraged expertise in C++, numerical methods, and scientific computing, contributing a targeted bug fix that enhanced the robustness of WarpX simulations.