No Manifest Detected on Flutter PWA due to root-level picture tag

[HoseinGhanbari]

Describe the bug
https://stackoverflow.com/questions/68961660/no-manifest-detected-flutter-pwa/

To Reproduce

flutter_native_splash:
  color: "#000000"
  image: assets/images/intro.png

flutter pub run flutter_native_splash:create

Expected behavior
a detectable manifest.json

Device:

• Device: Chrome/Edge
• OS: Windows 10

Flutter doctor

C:\WINDOWS\system32>flutter doctor -v
[√] Flutter (Channel stable, 2.2.3, on Microsoft Windows [Version 10.0.19042.1110])
    • Flutter version 2.2.3 at C:\Hosein\sdk\flutter
    • Framework revision f4abaa0735 (8 weeks ago), 2021-07-01 12:46:11 -0700
    • Engine revision 241c87ad80
    • Dart version 2.13.4

[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at C:\Hosein\sdk
    • Platform android-30, build-tools 30.0.3
    • ANDROID_HOME = C:\Hosein\sdk
    • ANDROID_SDK_ROOT = C:\Hosein\sdk
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174)
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe

[√] Android Studio
    • Android Studio at C:\Program Files\Android\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
    • android-studio-dir = C:\Program Files\Android\Android Studio
    • Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174)

[√] IntelliJ IDEA Community Edition (version 2020.1)
    • IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2019.1.3
    • 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

[√] VS Code (version 1.59.1)
    • VS Code at C:\Users\Hosein\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.25.0

[√] Connected device (2 available)
    • Chrome (web) • chrome • web-javascript • Google Chrome 92.0.4515.159
    • Edge (web)   • edge   • web-javascript • Microsoft Edge 92.0.902.84

• No issues found!

[jonbhanson]

Thanks for the report. This error will be fixed in the next release.