[]有关PathFinding.js

之前说这个是第三方库，所以我在index.html里面进行了加入
<script type="text/javascript" src="libs/laya.pathfinding.js"></script>
 
加入后，我在入口函数中进行使用，参考的是matter.js的载入方式

var PF = Laya.Browser.window.PathFinding;
var matrix = [
[0, 0, 0, 1, 0],
[1, 0, 0, 0, 1],
[0, 0, 1, 0, 0],
];
var grid = PF.core.Grid(matrix);
 
然后就报错了

TypeError: this._buildNodes is not a function
at Object.Grid (file:///D:/Layabox/PathFinding/bin/libs/laya.pathfinding.js:41:19)
at LayaAir3D.pathFindingTest (file:///D:/Layabox/PathFinding/bin/js/LayaAir3D.js:39:33)
at new LayaAir3D (file:///D:/Layabox/PathFinding/bin/js/LayaAir3D.js:30:14)
at file:///D:/Layabox/PathFinding/bin/js/LayaAir3D.js:44:1 
 
这要怎么使用？