SHKShakeConfiguration.h
is missing nullability annotations, and warns: pointer is missing a nullability type specifier (_nonnull _nullable or _null_unspecified)
In our case, we actually have to disable this warning entirely in our primary app target to integrate Shake, which is really bad IMO. I believe this is because Shake is distributed as an XCFramework, incidentally. But either way, the lack of nullability annotations is clearly an oversight since you do it everywhere else throughout the framework as far as I can tell.