Electro - Display custom data below short description on single product page

functions.php

if( ! function_exists( 'ec_child_single_product_summary_custom_content' ) ) {
    function ec_child_single_product_summary_custom_content() {
        $static_block_id = 0;
        if ( ! empty( $static_block_id ) && $static_block_id > 0 ) {
            $static_block = get_post( $static_block_id );
            if( is_wp_error( $static_block ) ) return;
            echo do_shortcode( $static_block->post_content );
        }
    }
}
add_action( 'woocommerce_single_product_summary', 'ec_child_single_product_summary_custom_content', 23 );