It may be a problem of Cesium or webpack, not Resium. You can try with raw Cesium3DTileset of Cesium.

import React, { useRef, useEffect } from "react";
import { Viewer, Cesium3DTileset } from "cesium"; 

const Test = () => {
  const ref = useRef();
  useEffect(() => {
    if (!ref.current) return;
    const viewer = new Viewer(ref.current);
    viewer.scene.primitives.add(new Cesium3DTileset({
      url: "YOUR URL"
    }));
  }, []);
  return <div ref={ref} style={{ width: "300px", height: "300px" }} />
}

Thank you very much. i still get the same result. the viewer is loading but not the 3d tileset. and no errors. i think too that it either a problem with cesium or webpack.
is there any way to get help to solve the problem? paid ofcourse. i;'m buidling a big app based on resium.
thanks alot:)

You can use onTileLoad, onTileFailed, onReady event props to debug whether loading is done or failed.

const Test = () => {
  const ref = useRef(null);
  return <Viewer>
      <Cesium3DTileset
        url="hogehoge/tileset.json"
        onAllTilesLoad={(...args) => console.log("onAllTilesLoad", ...args)}
        onInitialTilesLoad={(...args) => console.log("onInitialTilesLoad", ...args)}
        onTileFailed={(...args) => console.log("onTileFailed", ...args)}
        onTileLoad={(...args) => console.log("onTileLoad", ...args)}
        onTileUnload={(...args) => console.log("onTileUnload", ...args)}
        onReady={tileset => {
          console.log("onReady", tileset);
          ref.current.cesiumElement.zoomTo(tileset);
        }}
      />
  </Viewer>;
}

Further more, i see in the example
https://resium.darwineducation.com/examples/?path=/story/cesium3dtileset--basic
that the tileset is not shown. perhaps it's the same issue?

i have tried all of them and none of the are fired. i thought it's becuase its not getting anything in the url field therefore they are not firing

Further more, i see in the example
https://resium.darwineducation.com/examples/?path=/story/cesium3dtileset--basic
that the tileset is not shown. perhaps it's the same issue?

It is because the json file of url is 404 not found. I'll fix it soon.

Tileset data is here: https://github.com/darwin-education/resium/tree/master/.storybook/public/tileset

yes. i dont get the "Failed to load resource" if i put a wrong address in the url. i dont get anythink. hence the frustration:)

are you or do you know any experienced developers with resium than can help me when needed in my project? paid ofcoarse. i'm building a big project based on Cesium and Resium:)

@nadavtal you could try placing your 3dtiles under the 'public' folder. it works for me.

If the issue persists, please reopen the issue.

The issue persist for me (TypeError: undefined is not an object (evaluating 'this._url = undefined')) with version 1.17.1, I try to put the json file in different locations and have the same problem (also with web json hosted files)
Any idea?