Any ideas why gemini appears to be broken? All the library versions in this notebook appear to be pinned. If this worked before, I'm kindof out of ideas! Error in console is about unrecognised bandwidth function

Works for other specs, but not the specs here. My fork that kinda works for my purposes: https://observablehq.com/d/fe1e831a2b78c267

This works here: https://observablehq.com/d/2605e53bc621bb01 gemini only works with vega lite 4, but it loads the latest vega lite in OHQ. I made a github fork that packages vega lite 4. Using it, this notebook works (again)