Fixing Vertical viewport was given unbounded height.

[pishguy]

how can i put this library into CustomScrollView? i get this error:

Vertical viewport was given unbounded height.

i used the library sample code and added CustomScrollView to parent of NestedScrollViewRefreshIndicator

return CustomScrollView(
  physics: const ClampingScrollPhysics(),
  slivers: <Widget>[
    SliverPadding(
      padding: const EdgeInsets.all(0),
      sliver: SliverList(
        delegate: SliverChildListDelegate([
          NestedScrollViewRefreshIndicator(
            onRefresh: onRefresh,
            child: NestedScrollView(
                headerSliverBuilder: (BuildContext c, bool f) {
                  return buildSliverHeader();
                },
                //1.[pinned sliver header issue](https://github.com/flutter/flutter/issues/22393)
                pinnedHeaderSliverHeightBuilder: () {
                  return pinnedHeaderHeight;
                },
                //2.[inner scrollables in tabview sync issue](https://github.com/flutter/flutter/issues/21868)
                innerScrollPositionKeyBuilder: () {
                  String index = 'Tab';
                  if (primaryTC.index == 0) {
                    index +=
                        primaryTC.index.toString() + secondaryTC.index.toString();
                  } else {
                    index += primaryTC.index.toString();
                  }
                  return Key(index);
                },
                body: Column(
                  children: <Widget>[
                    TabBar(
                      controller: primaryTC,
                      labelColor: Colors.blue,
                      indicatorColor: Colors.blue,
                      indicatorSize: TabBarIndicatorSize.label,
                      indicatorWeight: 2.0,
                      isScrollable: false,
                      unselectedLabelColor: Colors.grey,
                      tabs: const <Tab>[
                        Tab(text: 'Tabqq0'),
                        Tab(text: 'Tab1'),
                      ],
                    ),
                    Expanded(
                      child: TabBarView(
                        controller: primaryTC,
                        children: <Widget>[
                          SecondaryTabView('Tab0', secondaryTC, true),
                          NestedScrollViewInnerScrollPositionKeyWidget(
                            const Key('Tab1'),
                            GlowNotificationWidget(
                              ListView.builder(
                                //store Page state
                                key: const PageStorageKey<String>('Tab1'),
                                physics: const ClampingScrollPhysics(),
                                itemBuilder: (BuildContext c, int i) {
                                  return Container(
                                    alignment: Alignment.center,
                                    height: 60.0,
                                    child: Text(const Key('Tab1').toString() +
                                        ': ListView$i'),
                                  );
                                },
                                itemCount: 50,
                              ),
                              showGlowLeading: false,
                            ),
                          )
                        ],
                      ),
                    )
                  ],
                )),
          )
        ]),
      ),
    )
  ],
);