Photorealistic 3D tiles not loading

I dont see an option to add photorealistic 3D tiles directly in the cesium hierarchy window as the instructions say I should.
I see it in the cesium ion assets tab at the bottom but when I click “add to level”, I keep getting the following error in the console and the tiles dont load :frowning:

It looks like you’re using an older version of Cesium for Unity. Can you update the package and try again?