完整报错信息：

• webviewScriptError

• Cannot read property 'update' of undefined;Exparser Observer Callback Error @ wx-picker-view-column#(anonymous)

• TypeError: Cannot read property 'update' of undefined

• at r.<anonymous> (<anonymous>:5:790)

• at n.safeCallback (<anonymous>:1:18938)

• at n.call (<anonymous>:1:18693)

• at Function.o._callObservers (<anonymous>:1:27306)

• at c (<anonymous>:1:23199)

• at u (<anonymous>:1:24992)

• at h (<anonymous>:1:25044)

• at o.r.appendChild (<anonymous>:1:25369)

• at Function.value (<anonymous>:7:11851)

• at e.value (<anonymous>:7:11134)

客户端信息：

screenHeight

640

system

Android 4.4.4

model

OPPO R7

screenWidth

360

windowHeight

567

language

zh_CN

windowWidth

360

pixelRatio

3

version

6.5.7

platform

android

其它机型暂未捕获到同样的报错

业务代码：

<picker-view indicator-style="color: #383838;" style="height: 200px;" value="{{data.tempValue}}" bindchange="onStepPickerChange">     <picker-view-column wx:for="{{data.data}}" wx:key="{{index}}">         <view wx:for="{{item}}" wx:key="{{index}}" class="step-picker-item">{{item}}</view>     </picker-view-column> </picker-view>