Flutter app build failed with exception

[Adarsh Balachandran]

When trying to build apk.

FAILURE: Build failed with an exception.

* What went wrong:

Execution failed for task ':flutter_android:verifyReleaseResources'.

> A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade

   > 1 exception was raised by workers:

     com.android.builder.internal.aapt.v2.Aapt2Exception: Android resource linking failed

     C:\Users\HP\.gradle\caches\transforms-2\files-2.1\25f737908970f0e5f2feb2f6dabea9da\core-1.1.0\res\values\values.xml:142:5-173:25: AAPT: error: resource android:attr/fontVariationSettings not found.

     C:\Users\HP\.gradle\caches\transforms-2\files-2.1\25f737908970f0e5f2feb2f6dabea9da\core-1.1.0\res\values\values.xml:142:5-173:25: AAPT: error: resource android:attr/ttcIndex not found.

* 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 9m 4s

Running Gradle task 'assembleRelease'...                          546.2s (!)

The built failed likely due to AndroidX incompatibilities in a plugin. The tool is about to try using Jetfier to solve the incompatibility.

Building plugin android_alarm_manager...

Running Gradle task 'assembleAarRelease'...                        68.0s

√ Built build\app\outputs\repo.

Building plugin cloud_firestore...

Running Gradle task 'assembleAarRelease'...                     

The plugin cloud_firestore could not be built due to the issue above.

Process finished with exit code 1