Duplicate class MultiDex$V14.class
问题 My Android gradle build is failing during the ProGuard phase with a duplicate class error for MultiDex$V14.class (see below). I understand what a duplicate class is and I know what MultiDex is but I still don't understand how it's a duplicate. Questions: I see one definition is in multidex.jar, of course. How can I tell where the other is defined? Isn't ProGuard supposed to remove duplicate entries instead of complaining about them? The "What went wrong" description at the bottom seems