Get the post-type 'People' posts from the same custom taxonomy - WordPress, custom post type (CPT)

get_same_cpt_cat_as_current.php

<?php
  $id = get_post($post->ID);
      $tax = get_the_terms($id, 'position');
      $args = array(
            'post_type' => 'people',
            'tax_query' => array(
               array(
                 'taxonomy' => 'position',
                 'field'    => 'slug',
                 'terms'    => $tax[0]->slug,
              ),
          ),
        );
 $loop = new WP_Query( $args );