[]微信小游戏默认项目代码添加unity导出.lh文件，微信开发工具提示错误

使用laya生成默认的微信小游戏项目，稍微修改其代码，增加https://github.com/layabox/layaair-doc/tree/master/Chinese/LayaAir_AS3/3D/examples
示例里下载的girl.lh文件，在laya内测试正常加载显示，代码如下：

// 程序入口

class LayaAir3D {

    /*3D场景*/

    private scene:Laya.Scene;

    /*3D角色*/

    private role:Laya.Sprite3D;

    /*3D摄像机*/

    public camera:Laya.Camera;



    constructor() {

        //初始化微信小游戏

        Laya.MiniAdpter.init();

        //初始化引擎

        Laya3D.init(0, 0, true);



        //适配模式

        Laya.stage.scaleMode = Laya.Stage.SCALE_FULL;

        Laya.stage.screenMode = Laya.Stage.SCREEN_NONE;



        //开启统计信息

        // Laya.Stat.show();



        //添加3D场景

        this.scene = Laya.stage.addChild(new Laya.Scene()) as Laya.Scene;



        //添加照相机

        this.camera = (this.scene.addChild(new Laya.Camera(0, 0.1, 100))) as Laya.Camera;

        this.camera.transform.translate(new Laya.Vector3(0, 3, 3));

        this.camera.transform.rotate(new Laya.Vector3(-30, 0, 0), true, false);

        this.camera.clearColor = null;



        //添加方向光

        var directionLight: Laya.DirectionLight = this.scene.addChild(new Laya.DirectionLight()) as Laya.DirectionLight;

        directionLight.color = new Laya.Vector3(0.6, 0.6, 0.6);

        directionLight.direction = new Laya.Vector3(1, -1, 0);



        //添加自定义模型

        var box: Laya.MeshSprite3D = this.scene.addChild(new Laya.MeshSprite3D(new Laya.BoxMesh(1, 1, 1))) as Laya.MeshSprite3D;

        box.transform.rotate(new Laya.Vector3(0, 45, 0), false, false);

        var material: Laya.StandardMaterial = new Laya.StandardMaterial();

        material.diffuseTexture = Laya.Texture2D.load("res/layabox.png");

        box.meshRender.material = material;



        //加载3D资源

        Laya.loader.create(["res/LayaScene_girl/girl.lh"],Laya.Handler.create(this,this.on3DComplete));

    }

    /*加载3D资源完成回调*/

    private on3DComplete():void{

        //创建3D角色

        //实例化角色

        this.role = Laya.loader.getRes("res/LayaScene_girl/girl.lh");

        this.scene.addChild(this.role);

        //角色位置

        this.role.transform.position = new Laya.Vector3(0,1,2);

    }

}

new LayaAir3D();

但发布到微信工具运行失败，提示错误如下：

Wechat Lib:1.8.0, 2017.12.22 16:03:55

code.js:104 Warning!,this class[MiniAdpter] already exist: Object

code.js:25623 ShaderCompile use time:5  size:4472/6067

code.js:25623 ShaderCompile use time:3  size:177/148

code.js:92311 Warning: discard property,please use transform's property instead.

code.js:21065 Object

WAGame.js:3 gameThirdScriptError

Sprite3D: The .lh file root type must be Sprite3D,please use other function to  load  this file.;at api readFile success callback function

[b]Error: Sprite3D: The .lh file root type must be Sprite3D,please use other function to  load  this file.

    at Sprite3D.__proto.onAsynLoaded (http://127.0.0.1:51205/game/code.js:82641:10)

    at ResInfo.onLoaded (http://127.0.0.1:51205/game/code.js:12995:61)

    at EventHandler.__proto.runWith (http://127.0.0.1:51205/game/code.js:711:59)

    at ResInfo.__proto.event (http://127.0.0.1:51205/game/code.js:483:28)

    at LoaderManager.__proto._endLoad (http://127.0.0.1:51205/game/code.js:13152:11)

    at Loader.onLoaded (http://127.0.0.1:51205/game/code.js:13128:10)

    at EventHandler.__proto.runWith (http://127.0.0.1:51205/game/code.js:711:59)

    at Loader.__proto.event (http://127.0.0.1:51205/game/code.js:483:28)

    at Loader.__proto.endLoad (http://127.0.0.1:51205/game/code.js:12740:8)

    at Function.Loader.checkNext (http://127.0.0.1:51205/game/code.js:12769:40)[/b]

console.error

errorReport @ WAGame.js:3

thirdErrorReport @ WAGame.js:3

(anonymous) @ WAGame.js:3

c @ WAGame.js:4

(anonymous) @ WAGame.js:4

function.setTimeout @ gamePage.html:1

(anonymous) @ WAGame.js:3

(anonymous) @ WAGame.js:5

ontimeout @ timers.js:469

tryOnTimeout @ timers.js:304

listOnTimeout @ timers.js:264