Please help with render & Lightmass!

Hi, first of all, sorry about my English.

I’ve got a problem when I render a scene, When it finish looks like this:

file:///C:/Users/Zrakloh/Desktop/image1.jpg

I think it is about Lightmass, and maybe related with level streaming(?), because the scene its too large.
I have searched how to solve this but i don’t understand what to do with those, if someone could help me, I really appreciate that.

Do you have a light mass importance volume in the scene? this can help when rendering and building the lighting.