1366 - Incorrect integer value: '' for column `hbl_shop`.`whos_online`.`customer_id` at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', '24k1f417s2lu77lq35862d8qo1', '216.73.216.179', '1751424245', '1751424245', '/product_info.php?info=p616_806354-Stehtisch-Partytisch--beheizbar--feste-Brennstoffe--Kompl.html')

[XT SQL Error]