this is my code for rendering a 3D t-shirt model and an image as its material:

const [decalGeometry, setDecalGeometry] = useState();
let fullTexture = new TextureLoader().load(tShirtReducer.fullDecal);
fullTexture.repeat = new Vector2(1, 1);
fullTexture.anisotropy = 16;
const {nodes, materials} = useGLTF('/shirt_baked_collapsed.glb');
useEffect(() => {
    let mesh = new Mesh(nodes.T_Shirt_male.geometry);
    mesh.receiveShadow = false;
    const decalGeometry = new DecalGeometry(
        mesh,
        new Vector3(0, -0.2, 0),
        new Euler(-0, 0, 0, "XYZ"),
        new Vector3(1, 1, 1)
    );
    setDecalGeometry(decalGeometry);
}, []);
return (
    <>
        <OrbitControls
            minPolarAngle={Math.PI / 2.5}
            maxPolarAngle={Math.PI / 2.5}
        />
        {
                decalGeometry &&
                <mesh
                    castShadow={true}
                    geometry={decalGeometry}
                    ref={meshRef}
                    // material-metalness={0.1}
                    >
                    <meshStandardMaterial
                        castShadow={true}
                        attach="material"
                        map={fullTexture}/>
                </mesh>
            }
   </>
)

Result:

As shown in the image, a large black shadow appears behind the model. I have set the receiveShadow value of the mesh to false but still the shadow didn’t disappear. How do I remove this shadow?