Load 3DTileset from url localhost error status code 502

I use unreal engine 5.0.1 I add blank 3DTileset to editor and paste the url in the form
Errors when loading tileset:

Actually, it runs successfully today with online http tileset.json. But I do not know what settings I have done or maybe just the server error that time. Thanks a lot all the time!

Sounds like it. A 502 error indicates that something broke on the server side.

By the way, Unreal Engine 5.0 is no longer supported by new versions of Cesium for Unreal. We recommend upgrading to 5.1+ as soon as possible.