Price wise or default sorting is not working for Woo Product Table

price_wise_view.php

add_filter('wpt_query_args','wpt_custom_price_wise_sorting_fixer');
/**
 * If anybody fond that, Price wise sorting is not working for your site
 * Need to customize product table's args
 * using filter hook: add_filter('wpt_query_args','wpt_custom_price_wise_sorting_fixer');
 * ********************
 * wpt_query_args
 * Very strong filter for Woo Product Table
 * 
 * @author Ibrahim Khalil <mdibrahimk48@gmail.com>
 *
 * @link https://wordpress.org/plugins/woo-product-table/
 * @link https://github.com/codersaiful/woo-product-table
 * @param array $args default array of woo product table.
 * @return array
 */
function wpt_custom_price_wise_sorting_fixer($args){
    
    $args['meta_query'][] = [
        'key'   => '_price',
        'compare'=> 'EXISTS',
    ];
    $args['orderby'] = 'meta_value_num';
    $args['order'] = 'ASC';
    return $args;
}