javascript - three.js使用threeBSP出现一点小错误，不知道什么原因

Question

var s1 = new THREE.Mesh(new THREE.CubeGeometry(20,0.5,15),mesh1);
    
    var s2 = new THREE.Mesh(new THREE.CubeGeometry(10,10,10),mesh1);
    
    var p1 = new ThreeBSP(s1);
    var p2 = new ThreeBSP(s2);
    var resShape = p1.subtract(p2);
    
    var res = resShape.toMesh();
    res.geometry.computeFaceNormal();
    res.geometry.computeVertexNormals();
    scene.add(res)
    

想创建一个如图的效果，就是类似于墙上掏个洞

结果提示如下错误：
ThreeBSP.js:83 Uncaught TypeError: mesh.rotation.setFromRotationMatrix is not a function

请大神们指点