I follow step 1 of https://knowledge.safe.com/questions/101352/write-b3dm-from-kmz-with-textures-to-cesium-3d-til.html, selected 'Placemark' feature and run.
It generated 'tileset.json' and 'data/data0.b3dm' and I tried loading it in Cesium but I couldn't see anything.
What is the right way to do to convert KML to 3D tiles?