I’m trying to review Mike’s sankey diagram visualization: https://beta.observablehq.com/@mbostock/d3-sankey-diagram
and it doesn’t load. The only message on the developer console is
The Content-Security-Policy directive ‘prefetch-src’ is implemented behind a flag which is currently disabled.
which is coming from d3-sankey-diagram:1, the current page.
Any hints from anyone?