Invalid content when I try to import custom post type from the old template wordpress

I changed my wordpress theme on December 2021, and Im still trying to import the custom post types of my old theme to my new one.Ive tried like 5 times, the only thing that is importing is the multimedia, and appears this about importing the posts:

Failed to import XXX: especiais_post is invalid content type

Do you guys have any clue about whats going on?? Please, help me!