single-category-page.php

<?php
/**
 * 
 *
 *
 * @link https://codex.wordpress.org/Template_Hierarchy
 *
 * @package AAFP
 */

get_header();
get_sidebar('category-page'); ?>

	<div id="primary" class="content-area">
		<main id="main" class="site-main" role="main">



			<?php
			while ( have_posts() ) : the_post();

				get_template_part( 'template-parts/content', 'page' );

				// If comments are open or we have at least one comment, load up the comment template.
				if ( comments_open() || get_comments_number() ) :
					comments_template();
				endif;

			endwhile; // End of the loop.
			?>

			<?php the_title( '<h2 class="category-title">', ' Topics</h2>' ); ?>

			<?php
			global $post;
			$my_query_args = array(
			    'posts_per_page' => 0, // change this to any number or '0' for all
			    'post_type' => 'page',
			    'tax_query' => array(
			        array(
			            'taxonomy' => 'category',
			            'field' => 'slug',
			            'terms' => $post->post_name;
			        )
			    )
			);
			// a new instance of the WP_query class   
			$my_query = new WP_Query( $my_query_args );

			if( $my_query->have_posts() ) : while( $my_query->have_posts() ) : $my_query->the_post(); ?>

			    <li><a href="<?php the_permalink() ?>"><?php the_title() ?></a></li>

			<?php endwhile; endif; wp_reset_postdata(); ?>

		</main><!-- #main -->
	</div><!-- #primary -->

<?php
get_footer();