Can't load texture of CG object when using GLTF loader

Questions
1

I downloaded a CG object from sketchfab and trying to use it in my React app. Right now I can load the model, however texture is not applied. How do I apply it? And how do I confirm that the texture file is loaded?

const loader = new GLTFLoader();
    console.log("loader", loader);
    loader.load(
      "/low_poly_dog/scene.gltf",
      function (gltf) {
        gltf.scene.scale.setScalar(8.5);
        gltf.scene.position.copy(
          overlay.latLngAltitudeToVector3(props.mapOptions.center)
        );
        scene.add(gltf.scene);
      },
      undefined,
      function (error) {
        console.error(error);
      }
);
2

crosslinking: javascript - Cannot load texture of CG object when using GLTF loader - Stack Overflow

3

I previewed the model using https://gltf-viewer.donmccurdy.com/ and figured out that texture was not applied. When I replaced with other model, it was loaded with texture.