I replicated the error. So yes - it’s visible here too.
Sorry that I am a bit delirious in writing this (it was late when I was poking around). One observation on your notebook is that it appears to be written like traditional JS. You might therefore find some tips for re-working it in:
I’ll continue to go out on a limb here and suggest, too, that the error is similar to the one I was encountering here:
While I can’t explain why your chart will render on load but not when re-running the import cell, from that thread and the errors you’re getting, I would imagine the root of the problem is with regard to how the ${ n.id } is being created in your SVG?
… I’ll play around more later (if I have time), and I’ll avoid cluttering up the forum with non-tested responses next time! Sorry folks! Again - mostly here for solidarity.