Failed terrain request coming from cesium.js

createWorldTerrain() seems to be using some default API key that is invalid and the subsequent API request to assets/1 is 401’ing. this is cesium 1.68. is there an update on cesium’s servers i am missing?

Welcome to the Cesium community @justin.fung!

You need to create your own API key from Cesium ion (as described here The default API key is only included for testing and changes with every new release (today’s the release of CesiumJS 1.70).