Component is a static type but has invalid light map Settings

Hi Everyone.

I did UV light map setting, Before It work Well But Now i got this ERROR Please Can any one Help Me

It means you have empty static mesh actors in your scene.
Try to find the ones mentioned and delete them, or add a static mesh into them.
currently its just an empty actor.

H Luos, I have this same issue. My log refers to the primary landscape and we only have one. Where would the others be hiding and how would one find them?