（小游戏开发问题）在微信开发者工具上运行正常，但是手机端报错，附源码，求大神！

var canvas = wx.createCanvas();

var height = canvas.height;

var width = canvas.width;

var aspect = width / height;

var scene = new THREE.Scene();

var context = canvas.getContext(‘webgl’);

var parameters={};

parameters.context = context;

parameters.canvas = canvas;

（报错行）var renderer = new THREE.WebGLRenderer(parameters);