add_filter(
    'wpc_filters_checkbox_term_html',
    function ( string $html, string $link_attributes, WP_Term $term, $filter ): string {
      if ( $term->taxonomy === 'pa_brand' ) {
        $img  = '<img src="' . plugin_dir_url( __FILE__ ) . '/img/' . $term->slug . '.svg" width="15" height="15" />';
        $html = '<a ' . $link_attributes . '>' . $img . ' ' . $term->name . '</a>';
      }

        return $html;
    },
    10,
    4
);