三个js not material.customProgramCacheKey is not a function at Object.getParameters 无限循环

Question

const scene = new THREE.Scene();
 const loader = new GLTFLoader(); 
loader.load( "./objects/eagle.glb", (res) => { console.log(res, "ressssssssss"); scene.add(res.scene); }, (xhr) => { console.log((xhr.loaded / xhr.total) * 100 + "% loaded"); }, (err) => { console.log(err, "erorrrr"); } );
 const camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 ); const render = new THREE.WebGLRenderer(); document.body.appendChild(render.domElement);

const light = new THREE.DirectionalLight(0xffffff, 0.5); light.position.set(0, 1, 0); scene.add(light.target);

camera.position.set(0, 1, 2); scene.add(camera);

render.setSize(window.innerWidth, window.innerHeight); render.setPixelRatio(Math.min(window.devicePixelRatio, 2)); render.shadowMap = true; render.cameraOutput = true;

function animate() {

requestAnimationFrame(animate); render.render(scene, camera); }

animate();