1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', 'a49a63a631c897eff0f67df95b69efe0', '216.73.216.3', '1767602571', '1767602571', '/product_info.php?info=p1859_Cook-Ins--Satellitenbild.html')

[XT SQL Error]