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Null check operator used on a null value #311

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xaldarof opened this issue Jun 18, 2022 · 3 comments
Closed

Null check operator used on a null value #311

xaldarof opened this issue Jun 18, 2022 · 3 comments
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@SergeShkurko
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bug Something isn't working

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@xaldarof
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xaldarof commented Jun 18, 2022 •
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When the exception was thrown, this was the stack:
#0 _EpubViewState._buildLoaded. (package:epub_view/src/ui/epub_view.dart:380:38)
#1 _PositionedListState._buildItem (package:scrollable_positioned_list/src/positioned_list.dart:252:54)
#2 _PositionedListState.build. (package:scrollable_positioned_list/src/positioned_list.dart:223:27)
#3 SliverChildBuilderDelegate.build (package:flutter/src/widgets/sliver.dart:471:22)
#4 SliverMultiBoxAdaptorElement._build (package:flutter/src/widgets/sliver.dart:1236:28)
#5 SliverMultiBoxAdaptorElement.createChild. (package:flutter/src/widgets/sliver.dart:1250:55)
#6 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2597:19)
#7 SliverMultiBoxAdaptorElement.createChild (package:flutter/src/widgets/sliver.dart:1242:12)
#8 RenderSliverMultiBoxAdaptor._createOrObtainChild. (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:349:23)
#9 RenderObject.invokeLayoutCallback. (package:flutter/src/rendering/object.dart:2025:59)
#10 PipelineOwner._enableMutationsToDirtySubtrees (package:flutter/src/rendering/object.dart:918:15)
#11 RenderObject.invokeLayoutCallback (package:flutter/src/rendering/object.dart:2025:14)
#12 RenderSliverMultiBoxAdaptor._createOrObtainChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:338:5)
#13 RenderSliverMultiBoxAdaptor.insertAndLayoutLeadingChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:454:5)
#14 RenderSliverList.performLayout (package:flutter/src/rendering/sliver_list.dart:128:29)
#15 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#16 RenderSliverEdgeInsetsPadding.performLayout (package:flutter/src/rendering/sliver_padding.dart:137:12)
#17 RenderSliverPadding.performLayout (package:flutter/src/rendering/sliver_padding.dart:371:11)
#18 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#19 RenderViewportBase.layoutChildSequence (package:flutter/src/rendering/viewport.dart:510:13)
#20 UnboundedRenderViewport._attemptLayout (package:scrollable_positioned_list/src/viewport.dart:281:12)
#21 UnboundedRenderViewport.performLayout (package:scrollable_positioned_list/src/viewport.dart:182:20)
#22 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#23 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#24 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#25 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#26 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#27 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#28 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#29 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#30 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#31 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#32 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#33 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#34 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#35 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#36 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#37 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#38 RenderCustomPaint.performLayout (package:flutter/src/rendering/custom_paint.dart:545:11)
#39 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#40 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#41 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#42 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#43 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#44 ChildLayoutHelper.layoutChild (package:flutter/src/rendering/layout_helper.dart:56:11)
#45 RenderStack._computeSize (package:flutter/src/rendering/stack.dart:552:43)
#46 RenderStack.performLayout (package:flutter/src/rendering/stack.dart:579:12)
#47 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#48 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#49 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#50 _RenderLayoutBuilder.performLayout (package:flutter/src/widgets/layout_builder.dart:318:14)
#51 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#52 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#53 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#54 ChildLayoutHelper.layoutChild (package:flutter/src/rendering/layout_helper.dart:56:11)
#55 RenderStack._computeSize (package:flutter/src/rendering/stack.dart:552:43)
#56 RenderStack.performLayout (package:flutter/src/rendering/stack.dart:579:12)
#57 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#58 MultiChildLayoutDelegate.layoutChild (package:flutter/src/rendering/custom_layout.dart:171:12)
#59 _ScaffoldLayout.performLayout (package:flutter/src/material/scaffold.dart:1003:7)
#60 MultiChildLayoutDelegate._callPerformLayout (package:flutter/src/rendering/custom_layout.dart:240:7)
#61 RenderCustomMultiChildLayoutBox.performLayout (package:flutter/src/rendering/custom_layout.dart:403:14)
#62 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#63 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#64 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#65 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#66 _RenderCustomClip.performLayout (package:flutter/src/rendering/proxy_box.dart:1376:11)
#67 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#68 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#69 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#70 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#71 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#72 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#73 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#74 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#75 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#76 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#77 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#78 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#79 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#80 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#81 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#82 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#83 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#84 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#85 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#86 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#87 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#88 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#89 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#90 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#91 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#92 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#93 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#94 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#95 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#96 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#97 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#98 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#99 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#100 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#101 RenderOffstage.performLayout (package:flutter/src/rendering/proxy_box.dart:3462:13)
#102 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#103 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#104 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#105 _RenderTheatre.performLayout (package:flutter/src/widgets/overlay.dart:749:15)
#106 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#107 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#108 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#109 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#110 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#111 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#112 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#113 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#114 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#115 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#116 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#117 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#118 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#119 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:116:14)
#120 RenderObject.layout (package:flutter/src/rendering/object.dart:1915:7)
#121 RenderView.performLayout (package:flutter/src/rendering/view.dart:165:14)
#122 RenderObject._layoutWithoutResize (package:flutter/src/rendering/object.dart:1757:7)
#123 PipelineOwner.flushLayout (package:flutter/src/rendering/object.dart:887:18)
#124 RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:504:19)
#125 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:892:13)
#126 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:370:5)
#127 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1146:15)
#128 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1083:9)
#129 SchedulerBinding.scheduleWarmUpFrame. (package:flutter/src/scheduler/binding.dart:864:7)
(elided 4 frames from class _RawReceivePortImpl, class _Timer, and dart:async-patch)
@xaldarof xaldarof added the bug Something isn't working label Jun 18, 2022
@Letalus
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Letalus commented Jul 13, 2022

@xaldarof formatting your error log correctly would help immensely

@Thelm76
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Thelm76 commented Oct 25, 2022

It would also avoid it from being wrongly referenced in every other issue on this repo...

@fauzipadlaw
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I'm getting the same error in production release

_CastError: Null check operator used on a null value
  File "sliver.dart", line 1521, in SliverMultiBoxAdaptorElement.estimateMaxScrollOffset
  File "sliver_list.dart", line 308, in RenderSliverList.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "viewport.dart", line 550, in RenderViewportBase.layoutChildSequence
  File "viewport.dart", line 1634, in RenderViewport._attemptLayout
  File "viewport.dart", line 1541, in RenderViewport.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "custom_paint.dart", line 552, in RenderCustomPaint.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "layout_builder.dart", line 315, in _RenderLayoutBuilder.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "layout_helper.dart", line 56, in ChildLayoutHelper.layoutChild
  File "flex.dart", line 903, in RenderFlex._computeSizes
  File "flex.dart", line 938, in RenderFlex.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "custom_layout.dart", line 171, in MultiChildLayoutDelegate.layoutChild
  File "scaffold.dart", line 1080, in _ScaffoldLayout.performLayout
  File "custom_layout.dart", line 240, in MultiChildLayoutDelegate._callPerformLayout
  File "custom_layout.dart", line 410, in RenderCustomMultiChildLayoutBox.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "proxy_box.dart", line 1467, in _RenderCustomClip.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "custom_layout.dart", line 171, in MultiChildLayoutDelegate.layoutChild
  File "scaffold.dart", line 1080, in _ScaffoldLayout.performLayout
  File "custom_layout.dart", line 240, in MultiChildLayoutDelegate._callPerformLayout
  File "custom_layout.dart", line 410, in RenderCustomMultiChildLayoutBox.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "proxy_box.dart", line 1467, in _RenderCustomClip.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "proxy_box.dart", line 3815, in RenderOffstage.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "proxy_box.dart", line 120, in RenderProxyBoxMixin.performLayout
  File "object.dart", line 2189, in RenderObject.layout
  File "box.dart", line 2430, in RenderBox.layout
  File "overlay.dart", line 856, in _RenderTheatre.performLayout
  File "object.dart", line 2027, in RenderObject._layoutWithoutResize
  File "object.dart", line 1020, in PipelineOwner.flushLayout
  File "binding.dart", line 516, in RendererBinding.drawFrame
  File "binding.dart", line 865, in WidgetsBinding.drawFrame
  File "binding.dart", line 381, in RendererBinding._handlePersistentFrameCallback
  File "binding.dart", line 1289, in SchedulerBinding._invokeFrameCallback
  File "binding.dart", line 1218, in SchedulerBinding.handleDrawFrame
  File "binding.dart", line 1076, in SchedulerBinding._handleDrawFrame
  File "zone.dart", line 1398, in _rootRun
  File "zone.dart", line 1300, in _CustomZone.run
  File "zone.dart", line 1208, in _CustomZone.runGuarded
  File "hooks.dart", line 147, in _invoke
  File "platform_dispatcher.dart", line 338, in PlatformDispatcher._drawFrame
  File "hooks.dart", line 112, in _drawFrame

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@fauzipadlaw @SergeShkurko @Thelm76 @Letalus @xaldarof