How to turn off all lights in UE4?

Question

unreal engine

Could you tell me how to achieve the "off" of the whole world? Here in the screenshot I have the sky and the sun hidden, but everything in the world is still highlighted:


I have a plugin that moves the sun in accordance with the time, coordinate and date. I'm not sure if there is a connection to this, but suddenly it is related. I'm already just fucked up, I can't make a normal night. The Intencity parameter does not affect anything at all.