Black spots on static meshes after light build

Hi there,
After days of working in a project with no problem, suddenly appeared black spots in many of my assets after light build.
I don’t understand where they come from, and something weird, the project has three floors and the spots just appeared in the last one.
I couldn’t find any solution in the answerhub, I hope somebody can help.
Here the screeshots

Thanks in advance
Carlos

You didn’t attach screenshots.

Make sure you have reflection captures or your metal might show up black from static lights

Sorry, here are the snapshots.

About the reflection captures,I’m putting them wherever i have something metallic, I think my problem is more related to lightmass.
Thanks for the quick answer…

Are you still having this problem? I have run into the same issue and have no idea why it is happening. It also seems like my skylight isnt working either.

Are you still having this problem? I have run into the same issue and have no idea why it is happening. It also seems like my skylight isnt working either.