Unresolved external error. how do i know which module to include?

rider is throwing me this error:

I’ve been told this means i need to include some modules in the build.cs file but I don’t know what module to include exactly. i tried PhysicsCore but it didn’t work.
could someone help?

On first glance you need Core and Engine. You can find the relevant modules in the documentation, e.g. for actor (under References - Module):