开发工具版本号：stable 1.06.2401020 操作系统：win10专业版本， 我在自定义组件中，wxml中定义了<view class="cvs">     <canvas id="mycanvasHome" canvas-id="mycanvasHome" type="2d" bindtouchstart="pantStart" bindtouchmove="pantMove" style="width: {{w_c}}px;height: {{h_c}}px;">           </canvas>   </view>     在对应的js文件中，生命周期ready函数中获取ctx，代码如下：const query = wx.createSelectorQuery().select('#mycanvasHome').fields({node: true,size: true}).exec(function (res){           console.log('select_mycanvasHome')           console.log(res)           const canvas = res[0].node           const context = canvas.getContext('2d')           const renderW = res[0].width           const renderH = res[0].height           const dpr = wx.getWindowInfo().pixelRatio           canvas.width = renderW * dpr           canvas.height = renderH * dpr           context.scale(dpr, dpr)           this.setData({             ctx: context           })         }) 在其他页面的json中也注册了自定义组件： "mystockLine": "../../component/stockLine/stockLine" 在其他页面的wxml中调用这个组件的代码如下：<mystockLine ></mystockLine> 在调试时报错如下: TypeError: Cannot read property 'node' of null     at Object.<anonymous> (stockLine.js? [sm]:29)     at Function.<anonymous> (WAServiceMainContext.js?t=wechat&s=1709696379677&v=3.3.4:1)     at :21660/appservice/<SelectorQuery callback function>     at WAServiceMainContext.js?t=wechat&s=1709696379677&v=3.3.4:1     at WAServiceMainContext.js?t=wechat&s=1709696379677&v=3.3.4:1     at Array.forEach (<anonymous>)     at WAServiceMainContext.js?t=wechat&s=1709696379677&v=3.3.4:1     at WAServiceMainContext.js?t=wechat&s=1709696379677&v=3.3.4:1     at WASubContext.js?t=wechat&s=1709696379677&v=3.3.4:1     at ve (WASubContext.js?t=wechat&s=1709696379677&v=3.3.4:1)(env: Windows,mp,1.06.2401020; lib: 3.3.4) 请问是什么原因，调试了两天了，也没有解决，实在不知道总是出在哪了，用文心一言大模型也没有解决这个问题。 肯请微信团队高人指点一二，诚盼，万分感谢。