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', 'bfd575173ee232da9dd7b0dda785bb19', '216.73.216.130', '1767834085', '1767834085', '/shop_content.php/language/en/coID/3/content/Unsere-AGB-s')

[XT SQL Error]