升级到NS6后页面导航停止工作

Question

通过SideKick将项目升级到NS6之后，页面导航现在失败，并显示以下错误：-

JS错误TypeError：未定义不是对象（正在评估'frameModule.topmost（）。navigate'）

以前这没问题。

项目已被tns平台清理为iOS，但问题仍然存在。

这是我的XML页面：

<Page loaded="Loaded" class="page" xmlns="http://www.nativescript.org/tns.xsd" xmlns:pb="nativescript-progressbar">
    <ActionBar title="Sites">
        <ActionItem tap="logout" ios.position="left" text="Logout"></ActionItem><ActionItem tap="refresh" ios.position="right" ios.systemIcon="13"></ActionItem>
    </ActionBar>
    <FlexboxLayout class="fb-background">
        <!-- <ListView items="{{ sites }}" height="90%" width="98%" class="listitem" itemTap="onListTap" pullToRefresh="true" row="1" pullToRefreshInitiated="{{onPullToRefreshInitiated}}"> -->
            <ListView items="{{ sites }}" height="90%" width="98%" class="listitem" itemTap="onListTap">
            <ListView.itemTemplate>
                <StackLayout orientation="horizontal" class="item" horizontalAlignment="left">
                    <StackLayout id="{{ sitename }}" orientation="vertical">
                        <GridLayout columns="auto *" rows="*">
                            <Label text="{{ sitename }}" class="h2" row="0" col="0" />

                        </GridLayout>
                    </StackLayout>
                </StackLayout>
            </ListView.itemTemplate>
            <!-- <ListView.pullToRefreshStyle>
                <PullToRefreshStyle indicatorColor="red" indicatorBackgroundColor="blue" />
            <ListView.pullToRefreshStyle> -->
        </ListView>
    </FlexboxLayout>
</Page>

这是我的导航代码：

var frameModule = require("tns-core-modules/ui/frame");
const topmost = require("tns-core-modules/ui/frame").topmost;

exports.onListTap = function (args) {
    var index = args.index;
    console.log(index);
    var livesite = siteslist[index].sitename;
    appSettings.setString("livesite", livesite);
        const movetosections = {
            moduleName: "views/categories/categories-page",
            animated: true,
            transition: {
                name: "flip",
                duration: 380,
                curve: "easeIn"
            }, function(e) {
                alert(e);
            }
        };
        frameModule.topmost().navigate(movetosections);
}