Issue with custom query

I have a custom query on a page that only shows the videos, and I’m using WP page navi for the pagination (I’m willing to try other options if necessary). So when I click to go to the next page, it takes me to mydomain.com/videos/page/2 but that page gives a 404.

Here’s my code for the query:

<?php $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
$args=array(
   'post_type'=>'videos',
   'paged'=>$paged
);
$temp = $wp_query;
$wp_query= null;
$wp_query = new WP_Query($args);

if ( $wp_query->have_posts() ) : while ( $wp_query->have_posts() ) : $wp_query->the_post();   

/* DO STUFF IN THE LOOP */
get_template_part( 'content', get_post_format() );

endwhile; endif;
/* PageNavi at Bottom */
 if (function_exists('wp_pagenavi')){wp_pagenavi();}
$wp_query = null;
$wp_query = $temp;
wp_reset_query(); ?>

What am I doing wrong? I have another custom query for just posts and the pagination on that works flawlessly.

Any help would be much appreciated.

https://ww.wp.xz.cn/plugins/wp-video-posts/