The project I'm working on in UE4 (v4.18) is planned for release on both Android and PC.
The wwise integration I'm using for audio works for the most part. The banks build properly, I can hear all the sounds in unreal editor and I can also hear it in my build for PC.
However, the problem arises when I go about building for android. Unreal starts throwing a huge number of errors during the build process (and subsequently fails).
Now I am generating sound banks for android inside my Wwise project (v2017.2.3.6575) and also in my unreal project so I know its not a problem with that.
For reference here is the relevant part of the build log.