Unresolved external with USelection::SelectObjectEvent.AddUObject

[SuperLooperBust]

For anyone still looking for this. You need to add PrivateDepencencyModuleNames in your project’s .Build.cs.

if (Target.bBuildEditor)
{
    PrivateDependencyModuleNames.AddRange(
        new string[] {
                "LevelEditor",
                "UnrealEd",
        });
}