Cannot read property 'canvasId' of undefined; at wx.canvasToTempFilePath
TypeError: Cannot read property 'canvasId' of undefined
at An (WAService.js:1:428255)
at Object.Mn [as canvasToTempFilePath] (WAService.js:1:428896)
at Object.<anonymous> (WAService.js:1:271002)
at Object.<anonymous> (WAService.js:1:851323)
at Function.<anonymous> (WAService.js:1:851453)
at Object.<anonymous> (WAService.js:1:256943)
at ye.canvasToTempImage (http://127.0.0.1:60152/appservice/pages/mymain/mymain.js:226:6)
at Function.
at WAService.js:1:101748
at WAService.js:1:89930
<canvas canvas-id="canvas" class="hbcanvas" hidden="true"></canvas>
<canvas canvas-id="mycanvas" class="hbcanvas" hidden="true"></canvas>
麻烦提供能复现问题的代码片段（https://developers.weixin.qq.com/miniprogram/dev/devtools/minicode.html）
麻烦提供代码片段看看（https://developers.weixin.qq.com/miniprogram/dev/devtools/minicode.html）