1366 - Incorrect integer value: '' for column `abtecsho_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', 'ck2senk2k4a174j2svee6nhet3', '216.73.216.19', '1770867629', '1770867629', '/product_info.php/info/p6065_-Jockel-F-2-JM---2-kg---Fettbrand-Loescher.html')

[XT SQL Error]