I am begginer in the dart and flutter development , i stucked with this error while running the app

Launching lib\main.dart on sdk gphone64 x86 64 in debug mode...

FAILURE: Build failed with an exception.

* Where:
Build file 'C:\coder\dust\android\app\build.gradle' line: 4

* What went wrong:
An exception occurred applying plugin request [id: 'dev.flutter.flutter-gradle-plugin']
> Failed to apply plugin 'dev.flutter.flutter-gradle-plugin'.
   > Cannot add task 'generateLockfiles' as a task with that name already exists.

* 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

Running Gradle task 'assembleDebug'...                           1,978ms
Error: Gradle task assembleDebug failed with exit code 1

As the error says, you are trying to add a task with name generateLockfiles twice. Just from the error message it is impossible to provide more guidance than the error message already does.