• 当前 Bug 的表现（可附上截图）

点击图片预览大图正常，但是控制台却报错提示：

app error: appServiceSDKScriptError

Cannot read property ‘mode’ of undefined;at api onAppEnterBackground callback function

TypeError: Cannot read property ‘mode’ of undefined

• 预期表现

点击图片预览大图，控制台没有报错信息。

• 复现路径

wx.previewImage({

current: e.currentTarget.dataset.thisimgurl, //点的是哪张图片

urls: [e.currentTarget.dataset.thisimgurl],

complete(e) {

console.log(“previewImage”, urls);

}

})

• 提供一个最简复现 Demo

wxml:

<image  bindtap=‘bindPrevewPicture’ data-thisimgurl=‘https://shijiu.jiusanye.com/file/images/userheadimage/userdefaultheadimg.png’  src=‘https://shijiu.jiusanye.com/file/images/userheadimage/userdefaultheadimg.png’  />

js:

bindPrevewPicture(e) {

console.log(“tapPrevewPictureHandler”, e);

wx.previewImage({

current: e.currentTarget.dataset.thisimgurl, //点的是哪张图片

urls: [e.currentTarget.dataset.thisimgurl],

complete(e) {

console.log(“previewImage”, urls);

}

})

},

代码块：
https://developers.weixin.qq.com/s/YcvAlsmt7m5I