A RenderRepaintBoundary expected a child of type RenderBox but received a child of type RenderSliverStickyHeader.

[cloudoftg0]

this code where _StickyHeaderGrid() is widget from example "side_header.dart" class MyScrollingScreen extends StatelessWidget { @override Widget build(BuildContext context) { return Scaffold( body: CustomScrollView(slivers: [ SliverList( delegate: SliverChildBuilderDelegate( (context, i) => _StickyHeaderGrid(index: i), childCount: 10, ), ), ]), ); } } is throwing this error `Restarted application in 661ms.

════════ Exception caught by widgets library ═══════════════════════════════════ The following assertion was thrown building _StickyHeaderGrid: A RenderRepaintBoundary expected a child of type RenderBox but received a child of type RenderSliverStickyHeader.

RenderObjects expect specific types of children because they coordinate with their children during layout and paint. For example, a RenderSliver cannot be the child of a RenderBox because a RenderSliver does not understand the RenderBox layout protocol. The RenderRepaintBoundary that expected a RenderBox child was created by: RepaintBoundary ← IndexedSemantics ← _SelectionKeepAlive ← NotificationListener<KeepAliveNotification> ← KeepAlive ← AutomaticKeepAlive ← KeyedSubtree ← SliverList ← Viewport ← IgnorePointer-[GlobalKey#42c8d] ← Semantics ← Listener ← ⋯ The RenderSliverStickyHeader that did not match the expected child type was created by: SliverStickyHeader ← _StickyHeaderGrid ← RepaintBoundary ← IndexedSemantics ← _SelectionKeepAlive ← NotificationListener<KeepAliveNotification> ← KeepAlive ← AutomaticKeepAlive ← KeyedSubtree ← SliverList ← Viewport ← IgnorePointer-[GlobalKey#42c8d] ← ⋯ The relevant error-causing widget was _StickyHeaderGrid When the exception was thrown, this was the stack #0 RenderObjectWithChildMixin.debugValidateChild. #1 RenderObjectWithChildMixin.debugValidateChild #2 SingleChildRenderObjectElement.insertRenderObjectChild #3 RenderObjectElement.attachRenderObject #4 RenderObjectElement.mount #5 SliverStickyHeaderRenderObjectElement.mount ... Normal element mounting (47 frames) #52 Element.inflateWidget #53 Element.updateChild #54 SliverMultiBoxAdaptorElement.updateChild #55 SliverMultiBoxAdaptorElement.createChild. #56 BuildOwner.buildScope #57 SliverMultiBoxAdaptorElement.createChild #58 RenderSliverMultiBoxAdaptor._createOrObtainChild. #59 RenderObject.invokeLayoutCallback. #60 PipelineOwner._enableMutationsToDirtySubtrees #61 RenderObject.invokeLayoutCallback #62 RenderSliverMultiBoxAdaptor._createOrObtainChild #63 RenderSliverMultiBoxAdaptor.addInitialChild #64 RenderSliverList.performLayout #65 RenderObject.layout #66 RenderViewportBase.layoutChildSequence #67 RenderViewport._attemptLayout #68 RenderViewport.performLayout #69 RenderObject.layout #70 RenderBox.layout #71 RenderProxyBoxMixin.performLayout #72 RenderObject.layout #73 RenderBox.layout #74 RenderProxyBoxMixin.performLayout #75 RenderObject.layout #76 RenderBox.layout #77 RenderProxyBoxMixin.performLayout #78 RenderObject.layout #79 RenderBox.layout #80 RenderProxyBoxMixin.performLayout #81 RenderObject.layout #82 RenderBox.layout #83 RenderProxyBoxMixin.performLayout #84 RenderObject.layout #85 RenderBox.layout #86 RenderProxyBoxMixin.performLayout #87 RenderObject.layout #88 RenderBox.layout #89 RenderProxyBoxMixin.performLayout #90 RenderObject.layout #91 RenderBox.layout #92 RenderProxyBoxMixin.performLayout #93 RenderCustomPaint.performLayout #94 RenderObject.layout #95 RenderBox.layout #96 RenderProxyBoxMixin.performLayout #97 RenderObject.layout #98 RenderBox.layout #99 RenderProxyBoxMixin.performLayout #100 RenderObject.layout #101 RenderBox.layout #102 RenderProxyBoxMixin.performLayout #103 RenderObject.layout #104 RenderBox.layout #105 RenderProxyBoxMixin.performLayout #106 RenderObject.layout #107 RenderBox.layout #108 RenderProxyBoxMixin.performLayout #109 RenderObject.layout #110 RenderBox.layout #111 MultiChildLayoutDelegate.layoutChild #112 _ScaffoldLayout.performLayout #113 MultiChildLayoutDelegate._callPerformLayout #114 RenderCustomMultiChildLayoutBox.performLayout #115 RenderObject.layout #116 RenderBox.layout #117 RenderProxyBoxMixin.performLayout #118 RenderObject.layout #119 RenderBox.layout #120 RenderProxyBoxMixin.performLayout #121 _RenderCustomClip.performLayout #122 RenderObject.layout #123 RenderBox.layout #124 RenderProxyBoxMixin.performLayout #125 RenderObject.layout #126 RenderBox.layout #127 RenderProxyBoxMixin.performLayout #128 RenderObject.layout #129 RenderBox.layout #130 RenderProxyBoxMixin.performLayout #131 RenderObject.layout #132 RenderBox.layout #133 RenderProxyBoxMixin.performLayout #134 RenderObject.layout #135 RenderBox.layout #136 RenderProxyBoxMixin.performLayout #137 RenderObject.layout #138 RenderBox.layout #139 RenderProxyBoxMixin.performLayout #140 RenderObject.layout #141 RenderBox.layout #142 RenderProxyBoxMixin.performLayout #143 RenderObject.layout #144 RenderBox.layout #145 RenderProxyBoxMixin.performLayout #146 RenderObject.layout #147 RenderBox.layout #148 RenderProxyBoxMixin.performLayout #149 RenderObject.layout #150 RenderBox.layout #151 RenderProxyBoxMixin.performLayout #152 RenderOffstage.performLayout #153 RenderObject.layout #154 RenderBox.layout #155 RenderProxyBoxMixin.performLayout #156 RenderObject.layout #157 RenderBox.layout #158 _RenderTheaterMixin.performLayout #159 RenderObject.layout #160 RenderBox.layout #161 RenderProxyBoxMixin.performLayout #162 RenderObject.layout #163 RenderBox.layout #164 RenderProxyBoxMixin.performLayout #165 RenderObject.layout #166 RenderBox.layout #167 RenderProxyBoxMixin.performLayout #168 RenderObject.layout #169 RenderBox.layout #170 RenderProxyBoxMixin.performLayout #171 RenderCustomPaint.performLayout #172 RenderObject.layout #173 RenderBox.layout #174 RenderProxyBoxMixin.performLayout #175 RenderObject.layout #176 RenderBox.layout #177 RenderProxyBoxMixin.performLayout #178 RenderObject.layout #179 RenderBox.layout #180 RenderProxyBoxMixin.performLayout #181 RenderObject.layout #182 RenderBox.layout #183 RenderProxyBoxMixin.performLayout #184 RenderObject.layout #185 RenderBox.layout #186 RenderProxyBoxMixin.performLayout #187 RenderObject.layout #188 RenderBox.layout #189 RenderProxyBoxMixin.performLayout #190 RenderObject.layout #191 RenderBox.layout #192 RenderView.performLayout #193 RenderObject._layoutWithoutResize #194 PipelineOwner.flushLayout #195 RendererBinding.drawFrame #196 WidgetsBinding.drawFrame #197 RendererBinding._handlePersistentFrameCallback #198 SchedulerBinding._invokeFrameCallback #199 SchedulerBinding.handleDrawFrame #200 SchedulerBinding.scheduleWarmUpFrame. #204 _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:189:12) (elided 3 frames from class _Timer and dart:async-patch) ════════════════════════════════════════════════════════════════════════════════ ` Any solution?