Build error with non stable Flutter SDK

[AJAY-AGARIAN]

Generating flutter profile apk ends up getting agora related error:
Execution failed for task ':agora_rtc_engine:compileProfileKotlin'.

Command:
flutter build apk --profile

I am using the latest Android Studio version as well as all dependencies are up to date
Agora Packages:

agora_rtc_engine: ^5.0.0
agora_rtm: ^1.0.1

Note: App runs fine on debug

Expanded error message:

e: C:\Users\Ajay\Downloads\flutter.pub-cache\hosted\pub.dartlang.org\agora_rtc_engine-5.0.0\android\src\main\kotlin\io\agora\agora_rtc_engine\Agor
aRtcEnginePlugin.kt: (253, 18): Type mismatch: inferred type is String? but String was expected
e: C:\Users\Ajay\Downloads\flutter.pub-cache\hosted\pub.dartlang.org\agora_rtc_engine-5.0.0\android\src\main\kotlin\io\agora\agora_rtc_engine\Agor
aSurfaceViewFactory.kt: (16, 1): Class 'AgoraSurfaceViewFactory' is not abstract and does not implement abstract base class member public abstract
fun create(p0: Context?, p1: Int, p2: Any?): PlatformView defined in io.flutter.plugin.platform.PlatformViewFactory
e: C:\Users\Ajay\Downloads\flutter.pub-cache\hosted\pub.dartlang.org\agora_rtc_engine-5.0.0\android\src\main\kotlin\io\agora\agora_rtc_engine\Agor
aSurfaceViewFactory.kt: (20, 3): 'create' overrides nothing
e: C:\Users\Ajay\Downloads\flutter.pub-cache\hosted\pub.dartlang.org\agora_rtc_engine-5.0.0\android\src\main\kotlin\io\agora\agora_rtc_engine\Agor
aTextureViewFactory.kt: (12, 1): Class 'AgoraTextureViewFactory' is not abstract and does not implement abstract base class member public abstract
fun create(p0: Context?, p1: Int, p2: Any?): PlatformView defined in io.flutter.plugin.platform.PlatformViewFactory
e: C:\Users\Ajay\Downloads\flutter.pub-cache\hosted\pub.dartlang.org\agora_rtc_engine-5.0.0\android\src\main\kotlin\io\agora\agora_rtc_engine\Agor
aTextureViewFactory.kt: (17, 3): 'create' overrides nothing

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':agora_rtc_engine:compileProfileKotlin'.

Compilation error. See log for more details

[littleGnAl]

Hello @AJAY-AGARIAN , can you print the flutter doctor, and which kotlin version do you use?

[AJAY-AGARIAN]

Kotlin version: 211-1.6.10-release-923-AS7442.40

Flutter doctor:
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel master, 2.11.0-0.0.pre.870, on Microsoft Windows [Version 10.0.19042.1586], locale en-US)
[√] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
[√] Chrome - develop for the web
[√] Visual Studio - develop for Windows (Visual Studio Community 2022 17.1.0)
[√] Android Studio (version 2021.1)
[√] VS Code, 64-bit edition (version 1.64.2)
[√] Connected device (4 available)
[√] HTTP Host Availability

• No issues found!

[suyie001]

the same problem. How to fix it?

[AJAY-AGARIAN]

DIdn't get any fix till now, opened a StackOverflow query too.

[littleGnAl]

It's a breaking change of flutter SDK, but we only support the stable version of flutter SDK
flutter/engine#30807

[AJAY-AGARIAN]

Does that mean downgrading flutter from pre versions to stable version solves the problem? The current stable flutter version is 2.10.3 as mentioned here: https://docs.flutter.dev/development/tools/sdk/releases

[AJAY-AGARIAN]

Switching to a stable release and then building profile apk succeeded.

Steps:

1. Run flutter channel stable in terminal to switch to the stable release of flutter
2. Check the flutter version now using: flutter --version , it should show version: 2.10.3 (Current stable version)
3. Run flutter clean
4. Run flutter build apk --profile, this time apk should be successfully built.