Issue 1:
Steps to Reproduce

I tried to run the flutter app from cmd using flutter create repo

and then cd repo

flutter run

After running this command the following errors are shown:

* Error running Gradle:
Exit code 1 from: D:\projectFlutter\repo\android\gradlew.bat app:properties:
Project evaluation failed including an error in afterEvaluate {}. Run with --stacktrace for details of the afterEvaluate {} error.

FAILURE: Build failed with an exception.

* Where:
Build file 'D:\projectFlutter\repo\android\app\build.gradle' line: 25

* What went wrong:
A problem occurred evaluating project ':app'.
> Could not resolve all files for configuration 'classpath'.
> Could not find lint-gradle-api.jar (com.android.tools.lint:lint-gradle-api:26.1.2).
Searched in the following locations:
https://jcenter.bintray.com/com/android/tools/lint/lint-gradle-api/26.1.2/lint-gradle-api-26.1.2.jar

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 1s

Logs

D:\projectFlutter\repo>flutter run --verbose
[ +56 ms] executing: [C:\Users\Processing\Desktop\flutter\] git rev-parse --abbrev-ref --symbolic @{u}
[ +318 ms] Exit code 0 from: git rev-parse --abbrev-ref --symbolic @{u}
[ +5 ms] origin/beta
[ +5 ms] executing: [C:\Users\Processing\Desktop\flutter\] git rev-parse --abbrev-ref HEAD
[ +289 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
[ +2 ms] beta
[ +5 ms] executing: [C:\Users\Processing\Desktop\flutter\] git ls-remote --get-url origin
[ +218 ms] Exit code 0 from: git ls-remote --get-url origin
[ +2 ms] https://github.com/flutter/flutter.git
[ +5 ms] executing: [C:\Users\Processing\Desktop\flutter\] git log -n 1 --pretty=format:%H
[ +280 ms] Exit code 0 from: git log -n 1 --pretty=format:%H
[ +2 ms] f37c235c32fc15babe6dc7b7bc2ee4387e5ecf92
[ +5 ms] executing: [C:\Users\Processing\Desktop\flutter\] git log -n 1 --pretty=format:%ar
[ +302 ms] Exit code 0 from: git log -n 1 --pretty=format:%ar
[ +2 ms] 5 weeks ago
[ +6 ms] executing: [C:\Users\Processing\Desktop\flutter\] git describe --match v*.*.* --first-parent --long --tags
[ +282 ms] Exit code 0 from: git describe --match v*.*.* --first-parent --long --tags
[ +2 ms] v0.9.4-0-gf37c235c3
[ +363 ms] executing: C:\Users\Processing\AppData\Local\Android\sdk\platform-tools\adb devices -l
[ +27 ms] Exit code 0 from: C:\Users\Processing\AppData\Local\Android\sdk\platform-tools\adb devices -l
[ ] List of devices attached
ZL33B28246 device product:nicklaus_f model:Moto_E__4__Plus device:nicklaus_f transport_id:1
[ +400 ms] C:\Users\Processing\AppData\Local\Android\sdk\platform-tools\adb -s ZL33B28246 shell getprop
[ +143 ms] ro.hardware = mt6735
[ +2 ms] ro.build.characteristics = default
[ +728 ms] Launching lib/main.dart on Moto E 4 Plus in debug mode...
[ +38 ms] Initializing gradle...
[ +2 ms] Using gradle from D:\projectFlutter\repo\android\gradlew.bat.
[ +106 ms] executing: D:\projectFlutter\repo\android\gradlew.bat -v
[ +757 ms]
------------------------------------------------------------
Gradle 4.4
------------------------------------------------------------

Build time: 2017-12-06 09:05:06 UTC
Revision: cf7821a6f79f8e2a598df21780e3ff7ce8db2b82

Groovy: 2.4.12
Ant: Apache Ant(TM) version 1.9.9 compiled on February 2 2017
JVM: 1.8.0_152-release (JetBrains s.r.o 25.152-b06)
OS: Windows 10 10.0 amd64
[ +3 ms] Initializing gradle... (completed)
[ +1 ms] Resolving dependencies...
[ +3 ms] executing: [D:\projectFlutter\repo\android\] D:\projectFlutter\repo\android\gradlew.bat app:properties
[+1307 ms] Project evaluation failed including an error in afterEvaluate {}. Run with --stacktrace for details of the afterEvaluate {} error.

FAILURE: Build failed with an exception.

* Where:
Build file 'D:\projectFlutter\repo\android\app\build.gradle' line: 25

* What went wrong:
A problem occurred evaluating project ':app'.
> Could not resolve all files for configuration 'classpath'.
> Could not find lint-gradle-api.jar (com.android.tools.lint:lint-gradle-api:26.1.2).
Searched in the following locations:
https://jcenter.bintray.com/com/android/tools/lint/lint-gradle-api/26.1.2/lint-gradle-api-26.1.2.jar

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 1s
[ +15 ms] Resolving dependencies... (completed)
[ +6 ms] * Error running Gradle:
Exit code 1 from: D:\projectFlutter\repo\android\gradlew.bat app:properties:
Project evaluation failed including an error in afterEvaluate {}. Run with --stacktrace for details of the afterEvaluate {} error.

FAILURE: Build failed with an exception.

* Where:
Build file 'D:\projectFlutter\repo\android\app\build.gradle' line: 25

* What went wrong:
A problem occurred evaluating project ':app'.
> Could not resolve all files for configuration 'classpath'.
> Could not find lint-gradle-api.jar (com.android.tools.lint:lint-gradle-api:26.1.2).
Searched in the following locations:
https://jcenter.bintray.com/com/android/tools/lint/lint-gradle-api/26.1.2/lint-gradle-api-26.1.2.jar

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 1s

[ +51 ms] "flutter run" took 3,628ms.
Please review your Gradle project setup in the android/ folder.

#0 throwToolExit (package:flutter_tools/src/base/common.dart:26:3)
#1 _readGradleProject (package:flutter_tools/src/android/gradle.dart:115:7)
<asynchronous suspension>
#2 _gradleProject (package:flutter_tools/src/android/gradle.dart:87:34)
<asynchronous suspension>
#3 getGradleAppOut (package:flutter_tools/src/android/gradle.dart:81:29)
<asynchronous suspension>
#4 AndroidApk.fromAndroidProject (package:flutter_tools/src/application_package.dart:96:23)
<asynchronous suspension>
#5 getApplicationPackageForPlatform (package:flutter_tools/src/application_package.dart:283:30)
<asynchronous suspension>
#6 FlutterDevice.runHot (package:flutter_tools/src/resident_runner.dart:267:21)
<asynchronous suspension>
#7 HotRunner.run (package:flutter_tools/src/run_hot.dart:262:39)
<asynchronous suspension>
#8 RunCommand.runCommand (package:flutter_tools/src/commands/run.dart:391:37)
<asynchronous suspension>
#9 FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:372:18)
#10 _asyncThenWrapperHelper.<anonymous closure> (dart:async/runtime/libasync_patch.dart:77:64)
#11 _rootRunUnary (dart:async/zone.dart:1132:38)
#12 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#13 _FutureListener.handleValue (dart:async/future_impl.dart:129:18)
#14 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:642:45)
#15 Future._propagateToListeners (dart:async/future_impl.dart:671:32)
#16 Future._complete (dart:async/future_impl.dart:476:7)
#17 _SyncCompleter.complete (dart:async/future_impl.dart:51:12)
#18 _AsyncAwaitCompleter.complete (dart:async/runtime/libasync_patch.dart:28:18)
#19 _completeOnAsyncReturn (dart:async/runtime/libasync_patch.dart:295:13)
#20 RunCommand.usageValues (package:flutter_tools/src/commands/run.dart)
#21 _asyncThenWrapperHelper.<anonymous closure> (dart:async/runtime/libasync_patch.dart:77:64)
#22 _rootRunUnary (dart:async/zone.dart:1132:38)
#23 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#24 _FutureListener.handleValue (dart:async/future_impl.dart:129:18)
#25 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:642:45)
#26 Future._propagateToListeners (dart:async/future_impl.dart:671:32)
#27 Future._complete (dart:async/future_impl.dart:476:7)
#28 _SyncCompleter.complete (dart:async/future_impl.dart:51:12)
#29 _AsyncAwaitCompleter.complete.<anonymous closure> (dart:async/runtime/libasync_patch.dart:33:20)
#30 _rootRun (dart:async/zone.dart:1124:13)
#31 _CustomZone.run (dart:async/zone.dart:1021:19)
#32 _CustomZone.bindCallback.<anonymous closure> (dart:async/zone.dart:947:23)
#33 _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
#34 _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
#35 _runPendingImmediateCallback (dart:isolate/runtime/libisolate_patch.dart:115:13)
#36 _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:172:5)`
-->

`D:\projectFlutter\repo>flutter analyze
Analyzing repo...
No issues found! (ran in 1.9s)`

D:\projectFlutter\repo>flutter doctor -v
[√] Flutter (Channel beta, v0.9.4, on Microsoft Windows [Version 10.0.17134.345], locale en-IN)
• Flutter version 0.9.4 at C:\Users\Processing\Desktop\flutter
• Framework revision f37c235c32 (5 weeks ago), 2018-09-25 17:45:40 -0400
• Engine revision 74625aed32
• Dart version 2.1.0-dev.5.0.flutter-a2eb050044

[√] Android toolchain - develop for Android devices (Android SDK 28.0.3)
• Android SDK at C:\Users\Processing\AppData\Local\Android\sdk
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-28, build-tools 28.0.3
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)
• All Android licenses accepted.

[√] Android Studio (version 3.2)
• Android Studio at C:\Program Files\Android\Android Studio
X Flutter plugin not installed; this adds Flutter specific functionality.
X Dart plugin not installed; this adds Dart specific functionality.
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)

[√] VS Code (version 1.28.2)
• VS Code at C:\Users\Processing\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 2.20.0

[√] Connected devices (1 available)
• Moto E 4 Plus • ZL33B28246 • android-arm • Android 7.1.1 (API 25)

• No issues found!

Issue 2:
Steps to Reproduce

Run the gallery app, and try to show the date picker component

Logs and Crash Reports

══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
The following assertion was thrown during performLayout():
RenderVirtualViewport does not support returning intrinsic dimensions.
Calculating the intrinsic dimensions would require walking the entire child list, which cannot
reliably and efficiently be done for render objects that potentially generate their child list
during layout.
When the exception was thrown, this was the stack:
#0 RenderVirtualViewport.debugThrowIfNotCheckingIntrinsics.<anonymous closure> (package:flutter/src/rendering/viewport.dart:398:9)
#1 RenderVirtualViewport.debugThrowIfNotCheckingIntrinsics (package:flutter/src/rendering/viewport.dart:396:12)
#2 RenderList._computeIntrinsicHeight (package:flutter/src/rendering/list.dart:132:16)
#3 RenderList.computeMaxIntrinsicHeight (package:flutter/src/rendering/list.dart:144:12)
#4 RenderBox._computeIntrinsicDimension.<anonymous closure> (package:flutter/src/rendering/box.dart:535:23)
#5 _HashVMBase&MapMixin&&_LinkedHashMapMixin.putIfAbsent (dart:collection-patch/compact_hash.dart:259)
#6 RenderBox._computeIntrinsicDimension (package:flutter/src/rendering/box.dart:533:41)
#7 RenderBox.getMaxIntrinsicHeight (package:flutter/src/rendering/box.dart:762:12)
#8 RenderProxyBox.computeMaxIntrinsicHeight (package:flutter/src/rendering/proxy_box.dart:68:20)
#9 RenderBox._computeIntrinsicDimension.<anonymous closure> (package:flutter/src/rendering/box.dart:535:23)
#10 _HashVMBase&MapMixin&&_LinkedHashMapMixin.putIfAbsent (dart:collection-patch/compact_hash.dart:259)
#11 RenderBox._computeIntrinsicDimension (package:flutter/src/rendering/box.dart:533:41)
#12 RenderBox.getMaxIntrinsicHeight (package:flutter/src/rendering/box.dart:762:12)
#13 RenderProxyBox.computeMaxIntrinsicHeight (package:flutter/src/rendering/proxy_box.dart:68:20)
#14 RenderBox._computeIntrinsicDimension.<anonymous closure> (package:flutter/src/rendering/box.dart:535:23)
#15 _HashVMBase&MapMixin&&_LinkedHashMapMixin.putIfAbsent (dart:collection-patch/compact_hash.dart:259)
#16 RenderBox._computeIntrinsicDimension (package:flutter/src/rendering/box.dart:533:41)
#17 RenderBox.getMaxIntrinsicHeight (package:flutter/src/rendering/box.dart:762:12)
#18 RenderStack.computeMaxIntrinsicHeight.<anonymous closure> (package:flutter/src/rendering/stack.dart:305:62)
#19 RenderStack._getIntrinsicDimension (package:flutter/src/rendering/stack.dart:281:54)
#20 RenderStack.computeMaxIntrinsicHeight (package:flutter/src/rendering/stack.dart:305:12)
#21 RenderBox._computeIntrinsicDimension.<anonymous closure> (package:flutter/src/rendering/box.dart:535:23)
#22 _HashVMBase&MapMixin&&_LinkedHashMapMixin.putIfAbsent (dart:collection-patch/compact_hash.dart:259)
#23 RenderBox._computeIntrinsicDimension (package:flutter/src/rendering/box.dart:533:41)
#24 RenderBox.getMaxIntrinsicHeight (package:flutter/src/rendering/box.dart:762:12)
#25 RenderProxyBox.computeMaxIntrinsicHeight (package:flutter/src/rendering/proxy_box.dart:68:20)
#26 RenderConstrainedBox.computeMaxIntrinsicHeight (package:flutter/src/rendering/proxy_box.dart:223:58)
#27 RenderBox._computeIntrinsicDimension.<anonymous closure> (package:flutter/src/rendering/box.dart:535:23)
#28 _HashVMBase&MapMixin&&_LinkedHashMapMixin.putIfAbsent (dart:collection-patch/compact_hash.dart:259)
#29 RenderBox._computeIntrinsicDimension (package:flutter/src/rendering/box.dart:533:41)
#30 RenderBox.getMaxIntrinsicHeight (package:flutter/src/rendering/box.dart:762:12)
#31 RenderFlex._getIntrinsicSize (package:flutter/src/rendering/flex.dart:210:34)
#32 RenderFlex.computeMaxIntrinsicWidth (package:flutter/src/rendering/flex.dart:251:12)
#33 RenderBox._computeIntrinsicDimension.<anonymous closure> (package:flutter/src/rendering/box.dart:535:23)
#34 _HashVMBase&MapMixin&&_LinkedHashMapMixin.putIfAbsent (dart:collection-patch/compact_hash.dart:259)
#35 RenderBox._computeIntrinsicDimension (package:flutter/src/rendering/box.dart:533:41)
#36 RenderBox.getMaxIntrinsicWidth (package:flutter/src/rendering/box.dart:660:12)
#37 RenderPadding.computeMaxIntrinsicWidth (package:flutter/src/rendering/shifted_box.dart:127:20)
#38 RenderBox._computeIntrinsicDimension.<anonymous closure> (package:flutter/src/rendering/box.dart:535:23)
#39 _HashVMBase&MapMixin&&_LinkedHashMapMixin.putIfAbsent (dart:collection-patch/compact_hash.dart:259)
#40 RenderBox._computeIntrinsicDimension (package:flutter/src/rendering/box.dart:533:41)
#41 RenderBox.getMaxIntrinsicWidth (package:flutter/src/rendering/box.dart:660:12)
#42 RenderBlock.computeMaxIntrinsicWidth.<anonymous closure> (package:flutter/src/rendering/block.dart:198:66)
#43 RenderBlock._getIntrinsicCrossAxis (package:flutter/src/rendering/block.dart:164:42)
#44 RenderBlock.computeMaxIntrinsicWidth (package:flutter/src/rendering/block.dart:198:16)
#45 RenderBox._computeIntrinsicDimension.<anonymous closure> (package:flutter/src/rendering/box.dart:535:23)
#46 _HashVMBase&MapMixin&&_LinkedHashMapMixin.putIfAbsent (dart:collection-patch/compact_hash.dart:259)
#47 RenderBox._computeIntrinsicDimension (package:flutter/src/rendering/box.dart:533:41)
#48 RenderBox.getMaxIntrinsicWidth (package:flutter/src/rendering/box.dart:660:12)
#49 RenderViewport.computeMaxIntrinsicWidth (package:flutter/src/rendering/viewport.dart:248:20)
#50 RenderBox._computeIntrinsicDimension.<anonymous closure> (package:flutter/src/rendering/box.dart:535:23)
#51 _HashVMBase&MapMixin&&_LinkedHashMapMixin.putIfAbsent (dart:collection-patch/compact_hash.dart:259)
#52 RenderBox._computeIntrinsicDimension (package:flutter/src/rendering/box.dart:533:41)
#53 RenderBox.getMaxIntrinsicWidth (package:flutter/src/rendering/box.dart:660:12)
#54 RenderProxyBox.computeMaxIntrinsicWidth (package:flutter/src/rendering/proxy_box.dart:54:20)
#55 RenderBox._computeIntrinsicDimension.<anonymous closure> (package:flutter/src/rendering/box.dart:535:23)
#56 _HashVMBase&MapMixin&&_LinkedHashMapMixin.putIfAbsent (dart:collection-patch/compact_hash.dart:259)
#57 RenderBox._computeIntrinsicDimension (package:flutter/src/rendering/box.dart:533:41)
#58 RenderBox.getMaxIntrinsicWidth (package:flutter/src/rendering/box.dart:660:12)
#59 RenderProxyBox.computeMaxIntrinsicWidth (package:flutter/src/rendering/proxy_box.dart:54:20)
#60 RenderBox._computeIntrinsicDimension.<anonymous closure> (package:flutter/src/rendering/box.dart:535:23)
#61 _HashVMBase&MapMixin&&_LinkedHashMapMixin.putIfAbsent (dart:collection-patch/compact_hash.dart:259)
#62 RenderBox._computeIntrinsicDimension (package:flutter/src/rendering/box.dart:533:41)
#63 RenderBox.getMaxIntrinsicWidth (package:flutter/src/rendering/box.dart:660:12)
#64 RenderIntrinsicWidth.performLayout (package:flutter/src/rendering/proxy_box.dart:579:36)
#65 RenderObject.layout (package:flutter/src/rendering/object.dart:1459:21)
#66 RenderProxyBox.performLayout (package:flutter/src/rendering/proxy_box.dart:82:13)
#67 RenderObject.layout (package:flutter/src/rendering/object.dart:1459:21)
#68 RenderProxyBox.performLayout (package:flutter/src/rendering/proxy_box.dart:82:13)
#69 RenderObject.layout (package:flutter/src/rendering/object.dart:1459:21)
#70 RenderProxyBox.performLayout (package:flutter/src/rendering/proxy_box.dart:82:13)
#71 RenderObject.layout (package:flutter/src/rendering/object.dart:1459:21)
#72 RenderProxyBox.performLayout (package:flutter/src/rendering/proxy_box.dart:82:13)
#73 RenderObject.layout (package:flutter/src/rendering/object.dart:1459:21)
#74 RenderConstrainedBox.performLayout (package:flutter/src/rendering/proxy_box.dart:232:13)
#75 RenderObject.layout (package:flutter/src/rendering/object.dart:1459:21)
#76 RenderPadding.performLayout (package:flutter/src/rendering/shifted_box.dart:160:11)
#77 RenderObject.layout (package:flutter/src/rendering/object.dart:1459:21)
#78 RenderPositionedBox.performLayout (package:flutter/src/rendering/shifted_box.dart:336:13)
#79 RenderObject.layout (package:flutter/src/rendering/object.dart:1459:21)
#80 RenderProxyBox.performLayout (package:flutter/src/rendering/proxy_box.dart:82:13)
#81 RenderObject.layout (package:flutter/src/rendering/object.dart:1459:21)
#82 RenderProxyBox.performLayout (package:flutter/src/rendering/proxy_box.dart:82:13)
#83 RenderObject.layout (package:flutter/src/rendering/object.dart:1459:21)
#84 RenderProxyBox.performLayout (package:flutter/src/rendering/proxy_box.dart:82:13)
#85 RenderObject.layout (package:flutter/src/rendering/object.dart:1459:21)
#86 RenderProxyBox.performLayout (package:flutter/src/rendering/proxy_box.dart:82:13)
#87 RenderObject.layout (package:flutter/src/rendering/object.dart:1459:21)
#88 RenderStack.performLayout (package:flutter/src/rendering/stack.dart:328:15)
#89 RenderObject._layoutWithoutResize (package:flutter/src/rendering/object.dart:1337:21)
#90 PipelineOwner.flushLayout (package:flutter/src/rendering/object.dart:822:18)
#91 BindingBase&SchedulerBinding&GestureBinding&ServicesBinding&RendererBinding.beginFrame (package:flutter/src/rendering/binding.dart:152:19)
#92 BindingBase&SchedulerBinding&GestureBinding&ServicesBinding&RendererBinding&WidgetsBinding.beginFrame (package:flutter/src/widgets/binding.dart:205:21)
#93 BindingBase&SchedulerBinding&GestureBinding&ServicesBinding&RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:144:5)
#94 BindingBase&SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:428:15)
#95 BindingBase&SchedulerBinding.handleBeginFrame (package:flutter/src/scheduler/binding.dart:388:7)
#96 _beginFrame (file:///Users/tvolkert/project/flutter/engine/src/out/ios_debug_sim_unopt/gen/sky/bindings/dart_ui/hooks.dart:48)
The following RenderObject was being processed when the exception was fired:
RenderIntrinsicWidth relayoutBoundary=up7 NEEDS-LAYOUT
This RenderObject had the following creator information:
IntrinsicWidth ← DefaultTextStyle ← AnimatedDefaultTextStyle ← _InkFeatures-[GlobalKey ink
renderer] ← NotificationListener<LayoutChangedNotification> ← ClipRRect ← DecoratedBox ← Container
← DecoratedBox ← Container ← ⋯
This RenderObject had the following descendants (showing up to depth 5):
RenderSemanticsGestureHandler NEEDS-LAYOUT
RenderPointerListener NEEDS-LAYOUT
RenderViewport NEEDS-LAYOUT
RenderBlock NEEDS-LAYOUT
RenderPadding NEEDS-LAYOUT
════════════════════════════════════════════════════════════════════════════════════════════════════
Another exception was thrown: 'package:flutter/src/rendering/box.dart': Failed assertion: line 812 pos 12: 'hasSize' is not true.
Another exception was thrown: 'package:flutter/src/rendering/box.dart': Failed assertion: line 812 pos 12: 'hasSize' is not true.
Another exception was thrown: 'package:flutter/src/rendering/box.dart': Failed assertion: line 812 pos 12: 'hasSize' is not true.
Another exception was thrown: 'package:flutter/src/rendering/box.dart': Failed assertion: line 812 pos 12: 'hasSize' is not true.
Another exception was thrown: 'package:flutter/src/rendering/box.dart': Failed assertion: line 812 pos 12: 'hasSize' is not true.
Another exception was thrown: 'package:flutter/src/rendering/shifted_box.dart': Failed assertion: line 267 pos 12: 'child.hasSize' is not true.
Another exception was thrown: 'package:flutter/src/rendering/box.dart': Failed assertion: line 812 pos 12: 'hasSize' is not true.