In my project, I'm trying to use the design support library. I have in my Gradle file:
dependencies {
    ....
    compile 'com.android.support:design'
    ....
}
And when I try to build this, I get the error:
Normally I would just click Install Repository and sync project, however, this seems to not work anymore.  Clicking this does absolutely nothing, even though clicking Open File works fine.  
How can I manually install it?
I have the latest Android Support Repository (30.0.0), and Android Support Library (23.2.1) installed.

 
     
     
    