ScrollableBottomSheet打开键盘时引发错误[FLUTTER]

Question

我正在使用使用scrollable_bottom_sheet 0.2.1包中的ScrollableBottomSheet的应用程序。它有一些TextField，但是在打开键盘时出现此错误：

═╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following ArgumentError was thrown building LayoutBuilder:
Invalid argument(s): 706.1236363636364
The relevant error-causing widget was:
  ScrollableBottomSheet
  
lib/main.dart:47
When the exception was thrown, this was the stack:
#0      double.clamp  (dart:core-patch/double.dart:183:7)
#1      _ScrollableBottomSheetState.build.<anonymous closure> 
package:scrollable_bottom_sheet/scrollable_bottom_sheet.dart:244
#2      _LayoutBuilderElement._layout.<anonymous closure> 
package:flutter/…/widgets/layout_builder.dart:121
#3      BuildOwner.buildScope 
package:flutter/…/widgets/framework.dart:2620
#4      _LayoutBuilderElement._layout 
package:flutter/…/widgets/layout_builder.dart:117
#5      RenderObject.invokeLayoutCallback.<anonymous closure> 
package:flutter/…/rendering/object.dart:1868
#6      PipelineOwner._enableMutationsToDirtySubtrees 
package:flutter/…/rendering/object.dart:920
#7      RenderObject.invokeLayoutCallback 
package:flutter/…/rendering/object.dart:1868
#8      RenderConstrainedLayoutBuilder.rebuildIfNecessary 
package:flutter/…/widgets/layout_builder.dart:226
#9      _RenderLayoutBuilder.performLayout 
package:flutter/…/widgets/layout_builder.dart:299
#10     RenderObject.layout 
package:flutter/…/rendering/object.dart:1769
#11     RenderProxyBoxMixin.performLayout 
package:flutter/…/rendering/proxy_box.dart:115
#12     RenderObject.layout 
package:flutter/…/rendering/object.dart:1769
#13     RenderProxyBoxMixin.performLayout 
package:flutter/…/rendering/proxy_box.dart:115
#14     RenderObject.layout 
package:flutter/…/rendering/object.dart:1769
#15     RenderProxyBoxMixin.performLayout 
package:flutter/…/rendering/proxy_box.dart:115
#16     _RenderCustomClip.performLayout 
package:flutter/…/rendering/proxy_box.dart:1269
#17     RenderObject.layout 
package:flutter/…/rendering/object.dart:1769
#18     RenderProxyBoxMixin.performLayout 
package:flutter/…/rendering/proxy_box.dart:115
#19     RenderObject.layout 
package:flutter/…/rendering/object.dart:1769
#20     RenderProxyBoxMixin.performLayout 
package:flutter/…/rendering/proxy_box.dart:115
#21     RenderObject.layout 
package:flutter/…/rendering/object.dart:1769
#22     RenderPositionedBox.performLayout 
package:flutter/…/rendering/shifted_box.dart:396
#23     RenderObject.layout 
package:flutter/…/rendering/object.dart:1769
#24     RenderStack.performLayout 
package:flutter/…/rendering/stack.dart:560
#25     RenderObject.layout 
package:flutter/…/rendering/object.dart:1769
#26     MultiChildLayoutDelegate.layoutChild 
package:flutter/…/rendering/custom_layout.dart:173
#27     _ScaffoldLayout.performLayout 
package:flutter/…/material/scaffold.dart:520
#28     MultiChildLayoutDelegate._callPerformLayout 
package:flutter/…/rendering/custom_layout.dart:242
#29     RenderCustomMultiChildLayoutBox.performLayout 
package:flutter/…/rendering/custom_layout.dart:401
#30     RenderObject._layoutWithoutResize 
package:flutter/…/rendering/object.dart:1632
#31     PipelineOwner.flushLayout 
package:flutter/…/rendering/object.dart:889
#32     RendererBinding.drawFrame 
package:flutter/…/rendering/binding.dart:404
#33     WidgetsBinding.drawFrame 
package:flutter/…/widgets/binding.dart:867
#34     RendererBinding._handlePersistentFrameCallback 
package:flutter/…/rendering/binding.dart:286
#35     SchedulerBinding._invokeFrameCallback 
package:flutter/…/scheduler/binding.dart:1115
#36     SchedulerBinding.handleDrawFrame 
package:flutter/…/scheduler/binding.dart:1054
#37     SchedulerBinding._handleDrawFrame 
package:flutter/…/scheduler/binding.dart:970
#41     _invoke  (dart:ui/hooks.dart:253:10)
#42     _drawFrame  (dart:ui/hooks.dart:211:3)
(elided 3 frames from dart:async)
════════════════════════════════════════════════════════════════════════════════════════════════════

这是我正在使用的代码：

class ContactsButton extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return FlatButton(
      color: Colors.white,
      child: Text('Contacts'),
      onPressed: () {
        showBottomSheet(
          context: context,
          clipBehavior: Clip.antiAlias,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.only(
              topRight: Radius.circular(10),
              topLeft: Radius.circular(10),
            ),
          ),
          builder: (BuildContext context) {
            return ScrollableBottomSheet(
              halfHeight: MediaQuery.of(context).size.height * 0.93,
              minimumHeight: MediaQuery.of(context).size.height * 0.93,
              child: TabbedSheet(),
            );
          },
        );
      },
    );
  }
}

class TabbedSheet extends StatefulWidget {
  const TabbedSheet({Key key}) : super(key: key);
  @override
  _TabbedSheetState createState() => _TabbedSheetState();
}

class _TabbedSheetState extends State<TabbedSheet>
    with SingleTickerProviderStateMixin {
  final List<Tab> myTabs = <Tab>[
    Tab(text: ''),
    Tab(text: ''),
  ];

  TabController _tabController;

  @override
  void initState() {
    super.initState();
    _tabController = TabController(vsync: this, length: myTabs.length);
  }

  @override
  void dispose() {
    _tabController.dispose();
    super.dispose();
  }

  void tabChangedCallback() {
    _tabController.animateTo(_tabController.index == 0 ? 1 : 0);
    setState(() {});
  }

  @override
  Widget build(BuildContext context) {
    int reduceHeight = _tabController.index == 0 ? 20 : 56;
    return Container(
      color: DeliveroLightPurple,
      child: Column(
        children: [
          HeaderCard(
            tabController: _tabController,
            tabChangedCallback: tabChangedCallback,
          ),
          Container(
            height: MediaQuery.of(context).size.height * 0.93 - reduceHeight,
            child: TabBarView(              
              physics: NeverScrollableScrollPhysics(),
              controller: _tabController,
              children: [
                StorageUpload(tabChangedCallback: tabChangedCallback),
                ContactsPage()
              ],
            ),
          ),
        ],
      ),
    );
  }
}

我不明白为什么会出现此错误。任何帮助都会很棒。谢谢！