I'm new to Three.js, with some of your guy's help I added shadows to my three.js model however when the light hits it creates thousands of lines. Idk if it's because of how bad I made the model. or I have to just change the light. The image is below.

image of thousands of lines

And The code

 var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera(
    60,
    window.innerWidth / window.innerHeight,
    0.01,
    1000
);
//camera.rotation.x=-20*Math.PI/180;
var renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.shadowMap.enabled = true;
document.getElementById('section1').appendChild(renderer.domElement);


window.addEventListener('resize', () => {
    camera.aspect = window.innerWidth / window.innerHeight;
    camera.updateProjectionMatrix();
    renderer.setSize(window.innerWidth, window.innerHeight);
    
});

window.addEventListener('scroll', ()=> {
    camera.position.y =  3.5 +(window.scrollY/400);
})


function mousemovement(event) {
    const mouseX = (event.clientX / window.innerWidth) * 2 - 1;
    const mouseY = -(event.clientY / window.innerHeight) * 2 + 1;

    light.position.x = mouseX * 7 + 1 ;

   light.position.y = mouseY * 4 + 4.5 ;
};

var numberofclicks = 2;

window.addEventListener('mousemove', mousemovement);

window.addEventListener('click', e =>{
    numberofclicks = numberofclicks + 1;
    if(numberofclicks % 2 == 0) {
window.addEventListener('mousemove', mousemovement);
}
else {
window.removeEventListener('mousemove', mousemovement);
}
});



//GLTF moldal
var loader = new GLTFLoader();

 loader.load("wrktblv2.gltf", function (gltf) {

    gltf.scene.traverse(function(child) {
    if (child.isMesh) {
    child.castShadow = true;
    child.receiveShadow = true;
    }
})
     scene.add(gltf.scene);

});
 
 var light = new THREE.PointLight(0xffffff, 2, 20);
 light.castShadow = false;
 
 light.position.set(1,10,2);

 scene.add(light);
 
 camera.position.set(1,3.5,9);

 
 
    //const lightHelper = new THREE.PointLightHelper(light);
    //const gridHelper = new THREE.GridHelper(200,50);
    //scene.add(lightHelper, gridHelper);
 
function animate(){
     requestAnimationFrame(animate);
     renderer.render(scene,camera);      
 }
 animate();

I tried changing the light strength and stuff but could not figure it out.

Please help.