Unable to run app. Gradle build failing continuously for Android

[AmolGangadhare]

Issue Unable to run app as gradle build is failing.

Steps to reproduce :

1. Steps give on https://github.com/apptreesoftware/flutter_barcode_reader

Log

• Error running Gradle: ProcessException: Process "/Users/admin/Desktop/TestApp/flutter_app/android/gradlew" exited abnormally:

FAILURE: Build failed with an exception.

• What went wrong: A problem occurred configuring project ':barcode_scan'.

  Failed to notify project evaluation listener. java.lang.AbstractMethodError (no error message)

• Get more help at https://help.gradle.org

BUILD FAILED in 10s Command: /Users/admin/Desktop/TestApp/flutter_app/android/gradlew app:properties

Finished with error: Please review your Gradle project setup in the android/ folder.

[fritz-playmaker]

Check these steps. It worked for me

https://github.com/apptreesoftware/flutter_barcode_reader/issues/71#issuecomment-468291746

[moseskarunia]

Check whether you already enabled kotlin or not.