Computer bug on build light

Development Rendering
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Hello,
Since 2 days my scene wan’t build light.
I have trying to delete all lights and rebuild it don’t fix the issue …
The build stay at 0% during 3 - 4 minutes and make my project / and sometimes my computer “crash”

I have added a Lightmass importance Volume, when i delete him i have no crash but the build stay at 0% and an error message said me to ad a Lightmass importance volume.

I have a GTX980 + I7 + 16 Go Ram and the scene is not really big, and they are not to much static mesh ( a small house and 7 - 8 trees).

Thanks for your help !

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Edit: I have tryed this solutions but don’t work:

3

I have resolved the problem.
Just deleted the moon