https://developers.weixin.qq.com/s/JtIZw9mD7sgw 错误提示只有这些，怎么解决？ VM52:1 TypeError: Cannot set property 'top' of undefined     at VM68 WAService.js:2     at VM68 WAService.js:2     at n (VM66 asdebug.js:1)     at e.exports.<anonymous> (VM66 asdebug.js:1)     at VM66 asdebug.js:1     at Array.forEach (<anonymous>)     at WebSocket._ws.onmessage (VM66 asdebug.js:1)