com.android.tools.build:gradle is no set in the build.gradle

[sswedan]

Description
I've created a new empty Flutter app with version (3.24.5) and I'm trying to add the "com.huawei.agconnect:agcp" plugin to use Huawei Messaging. When I try to run/build for android I get the following error:

An exception occurred applying plugin request [id: 'com.huawei.agconnect']
> Failed to apply plugin 'com.huawei.agconnect'.
   > com.android.tools.build:gradle is no set in the build.gradle file

I've tried changing the Gradle Version and Kotlin version but all attempts have resulted in the same error.

Here is the Sample Flutter app to test and replicate the issue:
https://github.com/sswedan/Empty_Flutter

Expected behavior
I expect the project to build without errors

Current behavior

An exception occurred applying plugin request [id: 'com.huawei.agconnect']
> Failed to apply plugin 'com.huawei.agconnect'.
   > com.android.tools.build:gradle is no set in the build.gradle file

Screenshots

Logs
flutter build apk

[id: 'dev.flutter.flutter-plugin-loader', version: '1.0.0']
[id: 'com.android.application', version: '8.7.2', apply: false]
[id: 'org.jetbrains.kotlin.android', version: '1.7.10', apply: false]

com.huawei.agconnect.agcp
[id: 'com.huawei.agconnect.agcp', version: '1.9.1.300', artifact: 'com.huawei.agconnect:agcp:1.9.1.300', apply: false]
[id: 'com.android.application']
[id: 'kotlin-android']
[id: 'dev.flutter.flutter-gradle-plugin']
[id: 'com.huawei.agconnect']

FAILURE: Build failed with an exception.

• Where:
  Build file 'empty_flutter\android\app\build.gradle' line: 7

• What went wrong:
  An exception occurred applying plugin request [id: 'com.huawei.agconnect']

Failed to apply plugin 'com.huawei.agconnect'.
com.android.tools.build:gradle is no set in the build.gradle file

Environment

• Platform: Flutter
• Kit: Push
• Kit Version 1.9.1.300
• OS Version: Android 14
• Android Studio version: 2022.2.1
• Platform version: 3.24.5