Lightmaps 0 Lightmap(s) after baking

Hi, this is my first post in here, hope that’ s all correct.

I’m pretty new to unreal and i’m doing some tests about bake lighting. I’m also trying to see my lightmaps but after baking in world setting under lightmap I’ve got 0 Lightmap(s).
I’m using UE 4.27 CPU lightmass.

I saw a lot of tutorial and in this section of world setting you can find the created lightmap.

In scene is all ok and the lightbaked is visible but i cannot open it. Any help?