I was having the same issue as OP and the above information helped fix it. Now I’m getting a different error that is also related to Wwise.
c.<PrintExceptionInfo>b__4_0: ERROR: System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Program Files\Epic Games\UE_4.20\Engine\Plugins\Wwise\Intermediate\Build\Win32\UE4\Development\AkAudio\AkAudio.precompiled'.
I checked the directory and it only goes up to Wwise and has no intermediate. any Idea what I need to do to fix this?
