DFAO - mesh distance fields is not working

hello guys!

I have a problem with the DFAO, I checked it in the project settings and restarted the project. added a skylight as movable and the engine scalability setting is set to epic
and when i check the mesh distance fields under view - visualize it shows nothing just brightness the screen a little (as if generate mesh distance field is not checked in the project settings)
here is a screen of the problem and the project itself
I also tried it on 4.16 and 4.17 no difference

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