arkit无法创建垂直面锚点

Question

import SwiftUI
import RealityKit
import AVFoundation  //视频播放需要用到avfoundation

struct ContentView : View {
    var body: some View {
        return ARViewContainer().edgesIgnoringSafeArea(.all)
    }
}



struct ARViewContainer: UIViewRepresentable {
    //实现目标：在垂直面墙体上放置一个tv。
    //动作：点击电视，电视开始播放视频文件
    func updateUIView(_ uiView: ARView, context: Context) {}
    func makeUIView(context: Context) -> ARView {
        
        let arView = ARView(frame: .zero)
        
//定义一个电视，包括1外壳和2屏幕部分（播放视频）
        let dimensions:SIMD3<Float>=[1.25,0.05,0.6]
        //屏幕整体，以米做单位定义长宽高
        
        
        //houshing外壳部分：
        let housingMesh = MeshResource.generateBox(size: dimensions)
        let housingMat  = SimpleMaterial(color:.blue,roughness:0.2,isMetallic:true)
        //📺外壳材质,黑色，粗糙程度0.2,材质为金属
        let housingEntity = ModelEntity(mesh:housingMesh,materials:[housingMat])
        //建立外壳实体
        
        
        //screen显示区域部分：
        let screenMesh = MeshResource.generatePlane(width:dimensions.x, depth:dimensions.z )
        let screenMat  = SimpleMaterial( color:.black, roughness:0.1, isMetallic: false)
        //显示区域部分尺寸，屏幕材质，注意，屏幕显示没有厚度
        let screenEntity = ModelEntity(mesh:screenMesh,materials:[screenMat])
        //显示屏实体
        screenEntity.name = "tvScreen"
        //显示屏部分给个名字，方便下方动作调用
        
        housingEntity.addChild(screenEntity)
        //实体合成，将屏幕外壳与屏幕显示部分结合到一起，方便调用
        
        screenEntity.setPosition([0,(dimensions.y)/2+0.01,0],relativeTo:housingEntity)
        //稍微分离屏幕显示和屏幕边框部分，显示出外壳和显示屏的凹陷感
        
        
//在arview添加扫描点
        let anchor = AnchorEntity(plane:.vertical)
        //建立垂直锚点
        anchor.addChild(housingEntity)
        //生成屏幕模型
        arView.scene.addAnchor(anchor)
        
        
//让电视支持点击手势操作
        arView.enableTapGesture()
        housingEntity.generateCollisionShapes(recursive:true)
        return arView
        
    }
    
   
    
}

//定义动作
extension ARView{
    //定义手势识别器
    
     func enableTapGesture(){
        let tapGestureRecognizer = UITapGestureRecognizer(target:self,action:#selector(handleTap(recognize:)))
        self.addGestureRecognizer(tapGestureRecognizer)
    //使用默认动作
     }
        //确认点击的是tv
  @objc    func handleTap(recognize:UITapGestureRecognizer){
            let tapLocation = recognize.location(in:self)
            
            if let entity = self.entity(at: tapLocation) as? ModelEntity,entity.name == "tvScreen"{
            
            //播放视频，调用AVfoundation
                loadVideoMaterial(for:entity)
            }
        }

func loadVideoMaterial(for entity: ModelEntity) {
    let asset = AVAsset(url:Bundle.main.url(forResource:"video1",withExtension:"mp4")!)
    let playerItem = AVPlayerItem(asset:asset)
    
    let player = AVPlayer()
    entity.model? .materials = [VideoMaterial(avPlayer: player)]
    
    player.replaceCurrentItem(with: playerItem)
    
    player.play()
}
        
     }

搜了很多资料，let anchor = AnchorEntity(plane:[.vertical,.horizontal])，可我使用都不行，求大佬解答