Could not create an instance of type com.android.build.api.variant.impl.LibraryVariantBuilderImpl.
Namespace not specified. Specify a namespace in the module's build file: C:\Users\Admin\AppData\Local\Pub\Cache\hosted\pub.dev\flutter_upi_india-0.0.1\android\build.gradle. See
Could not create an instance of type com.android.build.api.variant.impl.LibraryVariantBuilderImpl.