not painting some areas

Hi, I am very new now and I need to solve this problem urgently.
I want to paint the inside of the box drawing, all in one color . But when you choose them all or choose them separately, the color does not apply to all of them.
It is not applied everywhere or applied to certain places.
how to paint only empty spaces without changing red green lines in the box ?
(Object > Live Paint > Expand ) I tried this method but it did not.
It was painted the same way again.
I left a pdf for those who want to take a closer look. Thanks.