二维码功能不好用，点击二维码报错

[xumingyi]

环境信息：
cli packages: (C:\Users\FTD_2014\AppData\Roaming\npm\node_modules)

@ionic/cli-utils  : 1.19.1
ionic (Ionic CLI) : 3.19.1

global packages:

cordova (Cordova CLI) : not installed
Gulp CLI              : CLI version 3.9.1 Local version 3.9.1

local packages:

@ionic/app-scripts : 3.1.6
Cordova Platforms  : android 6.3.0
Ionic Framework    : ionic-angular 3.9.2

System:

Android SDK Tools : 26.1.1
Node              : v6.12.0
npm               : 3.10.10
OS                : Windows 10

错误如下：
vendor.js:2133 ERROR TypeError: Failed to execute 'drawImage' on 'CanvasRenderingContext2D': The provided value is not of type '(CSSImageValue or HTMLImageElement or HTMLVideoElement or HTMLCanvasElement or ImageBitmap or OffscreenCanvas)'
at QRCanvas.makeLogo (vendor.js:128407)
at QRCanvas.makeAll (vendor.js:128291)
at qrcanvas (vendor.js:129103)
at HTMLImageElement.image.onload [as __zone_symbol__ON_PROPERTYload] (main.js:776)
at HTMLImageElement.H (polyfills.js:3)
at t.invokeTask (polyfills.js:3)
at Object.onInvokeTask (vendor.js:5425)
at t.invokeTask (polyfills.js:3)
at r.runTask (polyfills.js:3)
at e.invokeTask [as invoke] (polyfills.js:3)

[artdong]

图片问题，检查你的图片是否存在