Multi_Flutters sample does not work with Flutter 3.19.5 about samples HOT 3 CLOSED

1.codes:
https://github.com/flutter/samples/tree/main/add_to_app/multiple_flutters/multiple_flutters_android
2.flutter doctor information:
`
multiple_flutters % flutter doctor -v

╔════════════════════════════════════════════════════════════════════════════╗
║ Welcome to Flutter! - https://flutter.dev ║
║ ║
║ The Flutter tool uses Google Analytics to anonymously report feature usage ║
║ statistics and basic crash reports. This data is used to help improve ║
║ Flutter tools over time. ║
║ ║
║ Flutter tool analytics are not sent on the very first run. To disable ║
║ reporting, type 'flutter config --no-analytics'. To display the current ║
║ setting, type 'flutter config'. If you opt out of analytics, an opt-out ║
║ event will be sent, and then no further information will be sent by the ║
║ Flutter tool. ║
║ ║
║ By downloading the Flutter SDK, you agree to the Google Terms of Service. ║
║ The Google Privacy Policy describes how data is handled in this service. ║
║ ║
║ Moreover, Flutter includes the Dart SDK, which may send usage metrics and ║
║ crash reports to Google. ║
║ ║
║ Read about data we send with crash reports: ║
║ https://flutter.dev/docs/reference/crash-reporting ║
║ ║
║ See Google's privacy policy: ║
║ https://policies.google.com/privacy ║
║ ║
║ To disable animations in this tool, use ║
║ 'flutter config --no-cli-animations'. ║
╚════════════════════════════════════════════════════════════════════════════╝

Flutter assets will be downloaded from https://storage.flutter-io.cn. Make sure you trust this source!
Found an existing Pub cache at /Users/heijianye/.pub-cache.
It can be repaired by running dart pub cache repair.
It can be reset by running dart pub cache clean.
Found an existing Dart Analysis Server cache at /Users/heijianye/.dartServer.
It can be reset by deleting /Users/heijianye/.dartServer.
[✓] Flutter (Channel stable, 3.19.5, on macOS 14.3.1 23D60 darwin-x64, locale zh-Hans-CN)
• Flutter version 3.19.5 on channel stable at /Users/heijianye/flutter3/flutter_3.19.5/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 300451adae (2 weeks ago), 2024-03-27 21:54:07 -0500
• Engine revision e76c956498
• Dart version 3.3.3
• DevTools version 2.31.1
• Pub download mirror https://pub.flutter-io.cn
• Flutter download mirror https://storage.flutter-io.cn

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
• Android SDK at /Users/heijianye/Library/Android/sdk
• Platform android-34, build-tools 33.0.0
• ANDROID_HOME = /Users/heijianye/Library/Android/sdk
• Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)
• All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 15.3)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 15E204a
• CocoaPods version 1.13.0

[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2022.2)
• Android Studio at /Applications/Android Studio.app/Contents
• 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+0-17.0.6b802.4-9586694)

[✓] VS Code (version 1.87.0)
• VS Code at /Users/heijianye/files/压缩包和安装包/Visual Studio Code.app/Contents
• Flutter extension version 3.86.0

[✓] Connected device (3 available)
• PEDM00 (mobile) • 2395c374 • android-arm64 • Android 12 (API 31)
• macOS (desktop) • macos • darwin-x64 • macOS 14.3.1 23D60 darwin-x64
• Chrome (web) • chrome • web-javascript • Google Chrome 123.0.6312.124

[✓] Network resources
• All expected network resources are available.

• No issues found!

`

from samples.

@heijianye That message is a warning and won't break the build. But, I do think I fixed the build, so this issue automatically close when the PR lands. Feel free to open another issue if your problem persists.

from samples.

Fixed via #2243

from samples.