══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
The following assertion was thrown during performLayout():
RenderFlex children have non-zero flex but incoming height constraints are unbounded.
When a column is in a parent that does not provide a finite height constraint, for example if it is
in a vertical scrollable, it will try to shrink-wrap its children along the vertical axis. Setting a
flex on a child (e.g. using Expanded) indicates that the child is to expand to fill the remaining
space in the vertical direction.
These two directives are mutually exclusive. If a parent is to shrink-wrap its child, the child
cannot simultaneously expand to fit its parent.
Consider setting mainAxisSize to MainAxisSize.min and using FlexFit.loose fits for the flexible
children (using Flexible rather than Expanded). This will allow the flexible children to size
themselves to less than the infinite remaining space they would otherwise be forced to take, and
then will cause the RenderFlex to shrink-wrap the children rather than expanding to fit the maximum
constraints provided by the parent.
If this message did not help you determine the problem, consider using debugDumpRenderTree():
  https://flutter.dev/debugging/#rendering-layer
  http://api.flutter.dev/flutter/rendering/debugDumpRenderTree.html
The affected RenderFlex is:
  RenderFlex#7295d relayoutBoundary=up26 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE(creator: Column ← _SingleChildViewport ← IgnorePointer-[GlobalKey#0c35e] ← Semantics ← Listener ← _GestureSemantics ←
  RawGestureDetector-[LabeledGlobalKey<RawGestureDetectorState>#34979] ← Listener ← _ScrollableScope ← _ScrollSemantics-[GlobalKey#9f11f] ← NotificationListener<ScrollMetricsNotification> ← RepaintBoundary ← ⋯, parentData: <none> (can use
  size), constraints: BoxConstraints(unconstrained), size: MISSING, direction: vertical, mainAxisAlignment: start, mainAxisSize: min, crossAxisAlignment: center, verticalDirection: down)
The creator information is set to:
  Column ← _SingleChildViewport ← IgnorePointer-[GlobalKey#0c35e] ← Semantics ← Listener ←
  _GestureSemantics ← RawGestureDetector-[LabeledGlobalKey<RawGestureDetectorState>#34979] ←
  Listener ← _ScrollableScope ← _ScrollSemantics-[GlobalKey#9f11f] ←
  NotificationListener<ScrollMetricsNotification> ← RepaintBoundary ← ⋯
The nearest ancestor providing an unbounded width constraint is: _RenderSingleChildViewport#8e9f8 relayoutBoundary=up25 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE:
  needs compositing
  creator: _SingleChildViewport ← IgnorePointer-[GlobalKey#0c35e] ← Semantics ← Listener ←
    _GestureSemantics ← RawGestureDetector-[LabeledGlobalKey<RawGestureDetectorState>#34979] ←
    Listener ← _ScrollableScope ← _ScrollSemantics-[GlobalKey#9f11f] ←
    NotificationListener<ScrollMetricsNotification> ← RepaintBoundary ← CustomPaint-[GlobalKey#98e20]
    ← ⋯
  parentData: <none> (can use size)
  constraints: BoxConstraints(0.0<=w<=Infinity, 0.0<=h<=456.0)
  size: MISSING
  offset: Offset(0.0, -0.0)
See also: https://flutter.dev/unbounded-constraints
If none of the above helps enough to fix this problem, please don't hesitate to file a bug:
  https://github.com/flutter/flutter/issues/new?template=2_bug.yml

The relevant error-causing widget was:
  NavigationRail
  NavigationRail:file:///Users/kevmoo/github/flutter_samples/material_3_demo/lib/home.dart:207:27

When the exception was thrown, this was the stack:
#0      RenderFlex.performLayout.<anonymous closure> (package:flutter/src/rendering/flex.dart:899:9)
flutter/samples#1      RenderFlex.performLayout (package:flutter/src/rendering/flex.dart:902:6)
flutter/samples#2      RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#3      RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#4      _RenderSingleChildViewport.performLayout (package:flutter/src/widgets/single_child_scroll_view.dart:494:14)
flutter/samples#5      RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#6      RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#7      RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#8      RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#9      RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#10     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#11     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#12     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#13     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#14     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#15     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#16     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#17     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#18     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#19     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#20     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#21     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#22     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#23     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#24     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#25     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#26     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#27     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#28     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#29     RenderCustomPaint.performLayout (package:flutter/src/rendering/custom_paint.dart:569:11)
flutter/samples#30     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#31     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#32     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#33     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#34     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#35     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#36     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#37     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#38     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#39     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#40     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#41     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#42     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#43     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#44     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#45     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#46     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#47     RenderPositionedBox.performLayout (package:flutter/src/rendering/shifted_box.dart:456:14)
flutter/samples#48     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#49     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#50     ChildLayoutHelper.layoutChild (package:flutter/src/rendering/layout_helper.dart:52:11)
flutter/samples#51     RenderFlex._computeSizes (package:flutter/src/rendering/flex.dart:869:45)
flutter/samples#52     RenderFlex.performLayout (package:flutter/src/rendering/flex.dart:904:32)
flutter/samples#53     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#54     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#55     RenderPadding.performLayout (package:flutter/src/rendering/shifted_box.dart:239:12)
flutter/samples#56     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#57     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#58     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#59     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#60     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#61     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#62     _RenderCustomClip.performLayout (package:flutter/src/rendering/proxy_box.dart:1440:11)
flutter/samples#63     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#64     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#65     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#66     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#67     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#68     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#69     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#70     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#71     RenderPositionedBox.performLayout (package:flutter/src/rendering/shifted_box.dart:456:14)
flutter/samples#72     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#73     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#74     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#75     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#76     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#77     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#78     _RenderCustomClip.performLayout (package:flutter/src/rendering/proxy_box.dart:1440:11)
flutter/samples#79     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#80     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#81     ChildLayoutHelper.layoutChild (package:flutter/src/rendering/layout_helper.dart:52:11)
flutter/samples#82     RenderFlex._computeSizes (package:flutter/src/rendering/flex.dart:809:43)
flutter/samples#83     RenderFlex.performLayout (package:flutter/src/rendering/flex.dart:904:32)
flutter/samples#84     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#85     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#86     MultiChildLayoutDelegate.layoutChild (package:flutter/src/rendering/custom_layout.dart:173:12)
flutter/samples#87     _ScaffoldLayout.performLayout (package:flutter/src/material/scaffold.dart:1063:7)
flutter/samples#88     MultiChildLayoutDelegate._callPerformLayout (package:flutter/src/rendering/custom_layout.dart:237:7)
flutter/samples#89     RenderCustomMultiChildLayoutBox.performLayout (package:flutter/src/rendering/custom_layout.dart:404:14)
flutter/samples#90     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#91     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#92     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#93     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#94     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#95     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#96     _RenderCustomClip.performLayout (package:flutter/src/rendering/proxy_box.dart:1440:11)
flutter/samples#97     RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#98     RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#99     RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#100    RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#101    RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#102    RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#103    RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#104    RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#105    RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#106    RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#107    RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#108    ChildLayoutHelper.layoutChild (package:flutter/src/rendering/layout_helper.dart:52:11)
flutter/samples#109    RenderStack._computeSize (package:flutter/src/rendering/stack.dart:582:43)
flutter/samples#110    RenderStack.performLayout (package:flutter/src/rendering/stack.dart:609:12)
flutter/samples#111    RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#112    RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#113    RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)
flutter/samples#114    RenderObject.layout (package:flutter/src/rendering/object.dart:2575:7)
flutter/samples#115    RenderBox.layout (package:flutter/src/rendering/box.dart:2396:11)
flutter/samples#116    RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:21)