Error while building Ex3.07-DeclareFlavours in Andriod studio 3.0

[geekanamika]

Android plugin 3.0.0 and higher include a new dependency mechanism that automatically matches variants when consuming a library.
Error:All flavors must now belong to a named flavor dimension.
Can i create a pull request by making changes inside build.gradle file ?
Resource required : https://developer.android.com/studio/build/gradle-plugin-3-0-0-migration.html?utm_source=android-studio#variant_aware

[dnbit]

@geekanamika
If we update it then the project will not work in Android Studio 2 versions. In order to keep compatibility, in case some student has not updated to Android Studio 3, we decided not to update this for now.

Instead, we have included in the course instructions on how to update this.

Sometimes this bits are tricky. When AS 3 was beta we needed to make sure that everything would work once it reached stable but at the same time we could not drop support for AS 2.

Eventually, we will end up dropping it and updating as you suggest.