CPT UI not displaying in Post Grid

Hello,

I’ve used the WP post grid before and one custom post type I created was displayed fine. I have created other custom post types in the same way as the previous one. And when I choose to display them in a WP post grid, it simply displays “Array.” I’m using Uncode theme, and WP 6.6.1 version, in Firefox. Any hint what I need to do?

Thanks for any kind of help!