@humanetech Valuable feedback ... thank you ... early days.
I don't know anything about SVG and am simply using the SVG option in GraphViz. I can try different variants of the output ... for example I can omit the URL. But since I don't use any of these services where it's failing it's difficult for me to debug.
I can just create an image, but that won't have a clickable node to access the original, and I don't know enough to generate HTML5.
On the list ... thinking.
More thoughts welcome.
@humanetech If you can find someone who knows SVG and is willing to look at the raw SVG created to see what might be causing the problem, that would be useful/helpful. Given that it's created by GraphViz, not sure I can do anything about it, but identifying the problem would be a start.
Perhaps the route to take medium term is to generate HTML5/CSS ... it would be more powerful, but I don't have those skills.