Woocommerce - не работает поиск по товарам

   register_sidebar( array(
        'name' => __( 'Форма поиска', 'fanat' ),
        'id' => 'primary-widget-area',
        'description' => __( 'Форма поиска', 'fanat' ),
        'before_widget' => '',
        'after_widget' => '',
        'before_title' => '<div class="lighter">',
        'after_title' => '</div>',
    ) );

<?php if ( is_active_sidebar( 'primary-widget-area' ) ) : ?>
    <div id="primary" role="complementary">
        <ul>
            <?php dynamic_sidebar( 'primary-widget-area' ); ?>
        </ul>
    </div>
<?php endif; ?>

<form role="search" method="get" class="woocommerce-product-search" action="<?php echo esc_url( home_url( '/katalog/poisk/'  ) ); ?>">
    <label class="screen-reader-text" for="s"><?php _e( 'Search for:', 'woocommerce' ); ?></label>
    <input type="search" class="search-field" placeholder="<?php echo esc_attr_x( 'Search Products&hellip;', 'placeholder', 'woocommerce' ); ?>" value="<?php echo get_search_query(); ?>" name="s" title="<?php echo esc_attr_x( 'Search for:', 'label', 'woocommerce' ); ?>" />
    <input type="submit" class="ser" value="<?php echo esc_attr_x( 'Search', 'submit button', 'woocommerce' ); ?>" />
    <input type="hidden" name="post_type" value="product" />
</form>