Disqus comment system not show

I've installed the disqus comment system plugin. I need some help to use it, I'm not able to display the comment box inside my post or pages. I'm using a custom theme, and there is no a comment.php file. Is this a problem? Here is my loop code

div class="row feed" id="" style="padding: 2.5em 0 1em 0;"
          ?php if( $menu_feed-have_posts() ): ?
          ?php while( $menu_feed-have_posts() ): $menu_feed-the_post(); ?
            section
              div class="col-sm-12 col-md-7 col-lg-7 col-xl-7 " id="pagesThumb"
                img class="img-fluid thumb" src="?php echo the_post_thumbnail_url(); ?" 
              /div
              div class="col-sm-12 col-md-5 col-lg-5 col-xl-5 in-menu" id="pageInMenu"
                h4 class="page-link"?php the_title(); ?/h4
                  ?php the_content(); ?
                a class="btn btn-link float-right next" href="" onclick=""i class="fas fa-angle-down"/i/a
              /div
              div class="col-sm-12 col-md-12 col-lg-12 comment-box"
                ?php comments_template(); ?
              /div
            /section
          ?php endwhile; ?
          ?php endif; wp_reset_postdata(); ?
        /div