Weird Sunsky alerts; never seen before. UE 4.27.2.

Hello, I am getting this error: < SunSky_2 Static mesh actor has NULL StaticMesh property > What I mean is why do I need to assign a mesh to SunSky? And when I import in a new SunSky, I get this ‘Bluprints BAD’ mesh graphic. Also, it gives the following error in the new SunSky’s blueprints: < This blueprint (self) is not a SceneComponent, therefore ’ Target ’ must have a connection. > What am I supposed to plug in into the Target in order to (firstly) make it run correctly and have it effect the whole scene?