Object black after rebuilding lights (change light map resolution doesn't help)

My objects turned black after rebuilding lights

Then I found this answer to let me change light map resolution to 512: Why does my object turn black when I build the lighting? - Rendering - Unreal Engine Forums
I changed and it made my object show right color again, but then UE4 need me to rebuild lighting again. After I rebuilt the lighting, everything rewind. How can I escape this loop?

Hi!

When you change lighting setting of an object or just move it or… Unreal will change its lighting back to dynamic!! /this is why you see the “correct” lighting/ But if your lighting is set to Static/Stationary then you’ll have to build your lights…

Usually when a mesh turns black it doesn’t get any lighting information! …I’m not sure if these are black!
There is another error message which says that Unreal won’t be able to visualize the correct results unless you raise this or turn off completely! …could be that your lighting is ok just the problem exists with the streaming pool!

you’re right, they’re not completely black. but nearly black.

Regarding the texture streaming pool error, I tried to built the lighting in a small area, and because the area was small, there was no that error. But still the meshes were nearly black after building