Lighting Issue

I’ve been following the new C++ Tutorial and were also planning on making a game in the process and every time i go to add new Geometry the entire level goes black except for some spots. could this have to do with the directional light? I’m very new at this and any help would be appreciated.

Disable the shadow of the directional light and see if the shadows are causing those black spots -> when they are causing the black spots, just add a skylight