Whenever I import a 3d object from 3dsMax or blender into three.js as GLTF files, I can’t see any shadows received or cast by the object. While loading, I set the castShadow and receiveShadow properties both to true, but, as seen in the picture, none of them work.
You’ll also have to enable shadow Map on the renderer, set directionalLight.castShadow to true and setup the directional lights shadow camera to contain the objects needed to cast shadows, take a look at this example in the documentation for a better understanding of how shadows are typically achieved
and just to fix your next problem, because this will blow, that’s not a valid path. if this works at all it’s accidental, but it won’t run in production. you can’t leave /src and you can’t fetch any asset from within /src. assets are in /public. if you have /public/box8.glb the path is “/box8.glb”.