Question

想在前端加载平面场景，代码和报错如下，请问怎么解决？

function onload(Cesium) {
      //初始化viewer部件
      var viewer = new Cesium.Viewer('cesiumContainer');
      var scene = viewer.scene;
      var widget = viewer.cesiumWidget;
      viewer.scene.mode = Cesium.SceneMode.COLUMBUS_VIEW;
      viewer._cesiumWidget._creditContainer.style.display = 'none';
      try {
        //打开所发布三维服务下的所有图层
       var url5 = "http://localhost:8090/iserver/services/3D-02/rest/realspace";
        var promise = scene.open(url5);
        Cesium.when.all(promise, function(layers) {

          var point = new Cesium.Cartesian3(-33504.191406250,-6619.189941406250, 10);
          var pointCartographic = scene.camera._projection.unproject(point);
          var pointCX = Cesium.Math.toDegrees(pointCartographic.longitude);
          var pointCY = Cesium.Math.toDegrees(pointCartographic.latitude);

          //设置相机位置，定位至模型
          scene.camera.flyTo({
            destination: Cesium.Cartesian3.fromDegrees(pointCX, pointCY, pointCartographic.height),
          });
        }, function(e) {
          if (widget._showRenderLoopErrors) {
            var title = '加载SCP失败，请检查网络连接状态或者url地址是否正确？';
            widget.showErrorPanel(title, undefined, e);
          }
        });
      } catch (e) {
        if (widget._showRenderLoopErrors) {
          var title = '渲染时发生错误，已停止渲染。';
          widget.showErrorPanel(title, undefined, e);
        }
      }
    }

代码参照了这篇博客：https://blog.csdn.net/supermapsupport/article/details/89681589