`<?php echo get_the_category_list(); ?>` not give me all my categories
I use `<?php echo get_the_category_list(); ?>` in my `footer.php` file to display my categories but in home page show only two categories and in inner single posts show post's related category and in pages show nothing.
even I use `<?php wp_reset_query(); ?>` after each `WP_Query`

please help me