Why use this tool to generate two-dimensional code will have the probability of the problem of messy code？

[MachoManCk]

When two-dimensional code generation probability will cause two-dimensional code messy code? Ask the author to explain what is the cause？

[MachoManCk]

const that = this;
new QRCode('myQrcode', {
text: checkSaleLink,
width: 150,
height: 150,
padding: 6,
correctLevel: QRCode.CorrectLevel.H, // 二维码可辨识度
callback: (e) => {
// 使用 setTimeout, 避免部分安卓机转出来的二维码图片不完整
setTimeout(() => {
wx.canvasToTempFilePath({
canvasId: 'myQrcode',
width: 150,
height: 150,
success: (e) => {
that.setData({
codeUrl: e.tempFilePath
})
log.info(二维码绘制成功,url参数为${checkSaleLink},用户唯一标示为${wx.getStorageSync('openId')},用户微信名称为${JSON.stringify(wx.getStorageSync('userInfo'))},当前店铺为${wx.getStorageSync('shopUuid')})
},
fail: err => {
log.error(二维码绘制失败错误日志为${JSON.stringify(err)})
}
})
}, 200);
}
})