[Web] Hot Reload will throw exception when using usePathUrlStrategy #127462
Description
Is there an existing issue for this?
- I have searched the existing issues
- I have read the guide to filing a bug
Steps to reproduce
1.Create a new flutter web project.
2.Add flutter_web_plugins dependency.
3.Add usePathUrlStrategy() method before runApp() method.
4.Add initialRoute and onGenerateRoute then remove home from MaterialApp widget.
5.Run the app using Android Studio and click hot reload button.
Expected results
Hot reload should work without throwing exceptions
Actual results
Red screen appears in chrome web browser with exception and this error message "A GlobalKey was used multiple times inside one widget's child list.".
The issue doesn't happen if usePathUrlStrategy() is removed.
Code sample
Code sample
import 'package:flutter/material.dart';
import 'package:flutter_web_plugins/url_strategy.dart';
void main() {
usePathUrlStrategy();
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
useMaterial3: true,
),
initialRoute: "FirstScreen",
onGenerateRoute: (RouteSettings settings) {
final routes = <String, WidgetBuilder>{
"/": (context) => const FirstScreen(title: "First Screen"),
"FirstScreen": (context) => const FirstScreen(title: "First Screen"),
};
final WidgetBuilder builder = routes[settings.name ?? "First Screen"]!;
return MaterialPageRoute(builder: (context) => builder(context), settings: settings);
},
);
}
}
class FirstScreen extends StatefulWidget {
const FirstScreen({super.key, required this.title});
final String title;
@override
State<FirstScreen> createState() => _FirstScreenState();
}
class _FirstScreenState extends State<FirstScreen> {
int _counter = 0;
void _incrementCounter() {
setState(() {
_counter++;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
backgroundColor: Theme.of(context).colorScheme.inversePrimary,
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
const Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.headlineMedium,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: const Icon(Icons.add),
),
);
}
}
Screenshots or Video
Screenshots / Video demonstration
Logs
Logs
Performing hot restart...
Waiting for connection from debug service on Chrome...
Restarted application in 124ms.
======== Exception caught by widgets library =======================================================
The following TypeErrorImpl was thrown building _FocusInheritedScope:
Unexpected null value.
The relevant error-causing widget was:
MaterialApp MaterialApp:file:///E:/AndroidStudioProjects/test_app/lib/main.dart:16:12
When the exception was thrown, this was the stack:
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 288:49 throw_
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 606:63 nullCheck
packages/test_app/main.dart 29:78 <fn>
packages/flutter/src/widgets/app.dart 1430:21 [_onGenerateRoute]
packages/flutter/src/widgets/navigator.dart 4158:31 [_routeNamed]
packages/flutter/src/widgets/navigator.dart 2720:31 defaultGenerateInitialRoutes
packages/flutter/src/widgets/navigator.dart 3380:41 restoreState
packages/flutter/src/widgets/restoration.dart 912:5 [_doRestore]
packages/flutter/src/widgets/restoration.dart 898:7 didChangeDependencies
packages/flutter/src/widgets/navigator.dart 3427:11 didChangeDependencies
packages/flutter/src/widgets/framework.dart 5237:11 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 6435:14 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 5251:11 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5242:11 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
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packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
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packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
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packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
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packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
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packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 5251:11 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5242:11 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 5251:11 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5242:11 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 5251:11 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5242:11 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 6435:14 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 5251:11 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5242:11 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 5251:11 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5242:11 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 5251:11 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5242:11 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5068:5 [_firstBuild]
packages/flutter/src/widgets/framework.dart 5062:5 mount
packages/flutter/src/widgets/framework.dart 3971:15 inflateWidget
packages/flutter/src/widgets/framework.dart 3708:18 updateChild
packages/flutter/src/widgets/binding.dart 1240:16 [_rebuild]
packages/flutter/src/widgets/binding.dart 1209:5 mount
packages/flutter/src/widgets/binding.dart 1156:16 <fn>
packages/flutter/src/widgets/framework.dart 2720:19 buildScope
packages/flutter/src/widgets/binding.dart 1155:12 attachToRenderTree
packages/flutter/src/widgets/binding.dart 987:24 attachRootWidget
packages/flutter/src/widgets/binding.dart 968:7 <fn>
dart-sdk/lib/_internal/js_dev_runtime/private/isolate_helper.dart 48:19 internalCallback
====================================================================================================
======== Exception caught by widgets library =======================================================
The following assertion was thrown building _FocusInheritedScope:
A GlobalKey was used multiple times inside one widget's child list.
The offending GlobalKey was: [GlobalObjectKey<NavigatorState> _WidgetsAppState#deb61]
The parent of the widgets with that key was: _FocusInheritedScope
The first child to get instantiated with that key became: Navigator-[GlobalObjectKey<NavigatorState> _WidgetsAppState#deb61]
dirty
dependencies: [UnmanagedRestorationScope]
state: NavigatorState#1a751(lifecycle state: initialized)
The second child that was to be instantiated with that key was: _FocusInheritedScope
A GlobalKey can only be specified on one widget at a time in the widget tree.
The relevant error-causing widget was:
MaterialApp MaterialApp:file:///E:/AndroidStudioProjects/test_app/lib/main.dart:16:12
When the exception was thrown, this was the stack:
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 288:49 throw_
packages/flutter/src/widgets/framework.dart 3892:11 <fn>
packages/flutter/src/widgets/framework.dart 3905:16 [_retakeInactiveElement]
packages/flutter/src/widgets/framework.dart 3953:35 inflateWidget
packages/flutter/src/widgets/framework.dart 3702:20 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 5417:5 update
packages/flutter/src/widgets/inherited_notifier.dart 107:11 update
packages/flutter/src/widgets/framework.dart 3686:14 updateChild
packages/flutter/src/widgets/framework.dart 6442:14 update
packages/flutter/src/widgets/framework.dart 3686:14 updateChild
packages/flutter/src/widgets/framework.dart 5111:16 performRebuild
packages/flutter/src/widgets/framework.dart 5251:11 performRebuild
packages/flutter/src/widgets/framework.dart 4805:7 rebuild
packages/flutter/src/widgets/framework.dart 2780:18 buildScope
packages/flutter/src/widgets/binding.dart 903:9 drawFrame
packages/flutter/src/rendering/binding.dart 358:5 [_handlePersistentFrameCallback]
packages/flutter/src/scheduler/binding.dart 1284:15 [_invokeFrameCallback]
packages/flutter/src/scheduler/binding.dart 1214:9 handleDrawFrame
packages/flutter/src/scheduler/binding.dart 939:7 <fn>
dart-sdk/lib/_internal/js_dev_runtime/private/isolate_helper.dart 48:19 internalCallback
====================================================================================================Flutter Doctor output
Doctor output
[√] Flutter (Channel stable, 3.10.1, on Microsoft Windows [Version 10.0.22621.1702], locale en-US)
• Flutter version 3.10.1 on channel stable at E:\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision d3d8effc68 (7 days ago), 2023-05-16 17:59:05 -0700
• Engine revision b4fb11214d
• Dart version 3.0.1
• DevTools version 2.23.1
[√] Windows Version (Installed version of Windows is version 10 or higher)
[√] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
• Android SDK at E:\android-sdk-windows
• Platform android-33, build-tools 33.0.2
• ANDROID_HOME = E:\android-sdk-windows
• Java binary at: E:\android-studio\jbr\bin\java
• Java version OpenJDK Runtime Environment (build 17.0.6+0-b2043.56-9586694)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[!] Visual Studio - develop for Windows (Visual Studio Community 2022 17.7.0 Preview 1.0)
• Visual Studio at C:\Program Files\Microsoft Visual Studio\2022\Preview
• Visual Studio Community 2022 version 17.7.33711.374
• The current Visual Studio installation is a pre-release version. It may not be supported by Flutter yet.
X Visual Studio is missing necessary components. Please re-run the Visual Studio installer for the "Desktop development with C++" workload, and include these components:
MSVC v142 - VS 2019 C++ x64/x86 build tools
- If there are multiple build tool versions available, install the latest
C++ CMake tools for Windows
Windows 10 SDK
[√] Android Studio (version 2022.2)
• Android Studio at E:\android-studio
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 17.0.6+0-b2043.56-9586694)
[√] VS Code (version 1.74.1)
• VS Code at C:\Users\PC\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.60.0
[√] Connected device (3 available)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.22621.1702]
• Chrome (web) • chrome • web-javascript • Google Chrome 113.0.5672.127
• Edge (web) • edge • web-javascript • Microsoft Edge 111.0.1661.62
[√] Network resources
• All expected network resources are available.
! Doctor found issues in 1 category.