Infinite Loading of Cesium JS 3D Tilesets


I have a question that I would like to inquire about.

I personally created a 3D tileset and tested it with CesiumJS. The result was as shown in the video below.

As seen in the video, there is an issue where 3D models keep loading indefinitely. What could be the reason for this?

I would appreciate it if you could explain the cause.

I’m also providing the index.html code used for the test.

I’m using a translator to ask this question.

Thank you.