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', 'ac945e1756021fc6d1b68ec7ff29811b', '216.73.216.116', '1752389274', '1752389274', '/shop_content.php/coID/1/content/Liefer--und-Versandkosten')

[XT SQL Error]