app:transformClassesWithMultidexlistForDebug FAILED

[GujjuFlutterGuy]

• What went wrong:
  Execution failed for task ':app:transformClassesWithMultidexlistForDebug'.

com.android.build.api.transform.TransformException: Error while generating the main dex list:
Error while merging dex archives:
Program type already present: com.shopapp.gateway.BuildConfig
Learn how to resolve the issue at https://developer.android.com/studio/build/dependencies#duplicate_classes.

I tried so many times but did not work.!

[DenysZP]

@Ketuzzz Are you trying a master branch or develop?