Flutter 使用 fat-aar 打包出现错误，Could not get unknown property 'applicationVariants' for extension

Question

环境

Flutter :flutter_windows_2.5.3-stable
Operating System: [Windows]
Gradle Plugin Version: [4.1.0]
Gradle Version: [6.5]
Fat-aar Version: [1.3.8]

错误信息

D:\03_WorkSpace\my_flutter_module>flutter build aar

 Building with sound null safety 

Running Gradle task 'assembleAarDebug'...                           3.9s


FAILURE: Build failed with an exception.

* Where:
Script 'C:\Users\Public\flutter_windows_2.5.3-stable\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 881

* What went wrong:
A problem occurred configuring project ':app'.
> Could not get unknown property 'applicationVariants' for extension 'android' of type com.android.build.gradle.LibraryExtension.

* 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 3s


Gradle task assembleAarDebug failed with exit code 1.

build.gradle 配置

flutter 以 module 形式创建，以下是app build.gradle 设置：

 // D:\03_WorkSpace\my_flutter_module\.android\app\build.gradle
def flutterPluginVersion = 'managed'

apply plugin: 'com.android.library'

apply plugin: 'com.kezong.fat-aar'

android {
    compileSdkVersion 30

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    defaultConfig {
        minSdkVersion 16
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"
    }

    buildTypes {
        profile {
            initWith debug
        }
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.debug
        }
    }
}

buildDir = new File(rootProject.projectDir, "../build/host")
dependencies {
    implementation  project(':flutter')
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    compileOnly  'androidx.appcompat:appcompat:1.0.2'
    compileOnly  'androidx.constraintlayout:constraintlayout:1.1.3'

    embed 'io.flutter:flutter_embedding_release:1.0.0-d3ea636dc5d16b56819f3266241e1f708979c233'
    embed 'io.flutter:armeabi_v7a_release:1.0.0-d3ea636dc5d16b56819f3266241e1f708979c233'
    embed 'io.flutter:arm64_v8a_release:1.0.0-d3ea636dc5d16b56819f3266241e1f708979c233'
    embed 'io.flutter:x86_64_release:1.0.0-d3ea636dc5d16b56819f3266241e1f708979c233'
}

期望结果

请问这个错误如何解决啊？有什么解决思路可提供参考吗？