Lighting in paper2d

Hello! I am very new to Unreal Engine and am trying to follow this paper2d tutorial on youtube: https://youtu.be/xNZXFA_eE8Q?si=GV1zlxW0OXyt0YX3
It seems easy, but when I press play my world goes black (see images). I think it has something to do with lighting and rendering but I do not know how to fix it because I am unfamiliar with the engine.

Please help!