Why space inside water gets Black after building lighting?

I have created a swimming pool just by following this A new, community-hosted Unreal Engine Wiki - Announcements - Epic Developer Community Forums ,but after building lighting the space inside my water gets full black.Please Help !
I do have post processing volume and physics volume as well

][2]

This is because your water mesh is casting a shadow into it. You need to go into the static mesh properties and disable cast shadows, that way when you bake lighting no shadows will be cast from the water :slight_smile:

Thanks,i got it ! :smiley: Tbh what can you expect more from a noob ? :v