My browser is flagging a syntax error of an unexpected '}'. When I look at the HTML file, I think I see the issue. <img width="714" height="500" alt="Image" src="https://github.com/user-attachments/assets/229c4363-3800-4ada-8474-36e80e2ce1dc" /> If I manually move that '});' so that it ends the gph.on block, then everything seems to render OK.