Problem with lighting when in play mode after inserting lightmass volume

I have a Day Night cycle in my level, when I used to build the light i get the error that I don’t have a lightmass volume, so i Inserted the lightmass volume and when I play the level and the cycle goes through dark this happens, but when it is day it looks fine.

Yes I know that I am just mentioning that I have a day and night cycle because this problem happens when the night cycle comes up. the reason i put in the lightmass is because my terrain is large

I kept getting this error when I build light in my level “No important volume found and the scene is so large that the automatically synthesized volume will not yield good results.Please add a tightly bounding lightmass importance volume to optimize your scene’s quality and lightning”

and should get rid of the Importance volume too?

I dont know why that is happening but in any case, you dont need to build the lighting for a day & night cycle anyway.

I’m still confused as to why you are using a lightmass importance volume. It is only needed if you are using static lighting and building the lights.

Yes, and that is if you are using static lighting and need to build the lights. What you need to do is go to World Settings and enable Force No Precomputed Lighting. Build the lights only once after that and you wont need to do that ever again.

Check out this guide for more detailed information on how lighting works in UE4: A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums

Yes.
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