Most d3 chart notebooks have been completely reworked. The last version of the sunburst notebook that still had the chart cell is 242: import { chart as sunburst } from "@d3/d3-sunburst@242"

Good news, @fil has added the chart name back to the notebook. No need to change anything! :D

The domain seems changed from twosixlabs.com to twosixtech.com, in case anyone finds the links are dead.