Category template 1 – sibling categories

Hi,

the category template 1 when it is in a category without subcategories, displays all the categories of the site. Please how can you display nothing when the category has no sub-categories?

In this support topic, Emil G says to replace parent::get_sibling_categories to self::get_sibling_categories.
https://forum.tagdiv.com/topic/sibling-categories/

I changed from parent to self but nothing happens.

The file I’m editing is as follows:
/Newsmag-child/includes/category_templates/td_category_template_1.php

To code:


<?php
echo parent::get_sibling_categories();
echo parent::get_pull_down();
?>


Please how can I do? Do you have any guide about it?

Thanks so much.
Gabriel