Can't use pagination with custom taxonomy

Question

I have a problem with custom taxonomies & post types URLs.

My post type slug is videos, it has an archive and it works fine: https://uwebdesign.ru/videos/. The pagination on the bottom of the page works like a charm.

My taxonomy slug is video_type, but I rewrite the slug to be videos, than all the taxonomy archives look like this: https://uwebdesign.ru/videos/podcasts/ and work fine. But the pagination is completely broken (shows 404 on the second page). Why is that?

To register taxonomy I use this code:

$args = array(
    'labels'            => array(), //* Not important.
    'public'            => true,
    'show_admin_column' => true,
    'hierarchical'      => true,
    'description'       => '', //* Not important.
    'rewrite'           => array(
        'slug' => 'videos',
    ),
);
register_taxonomy( 'video_type', 'videos', $args );

All the permalink rules are flushed.

What should I do?

Answer 1

You're using the same slug for both your videos custom post type and video_type taxonomy. Then, when querying post, WordPress don't know what to select from database.

Change your videos post type to video or something differs from videos taxonomy slug will solve your problem.