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', '7922323d7c50a8c58bef9ff483315a2c', '216.73.216.142', '1758262192', '1758262192', '/shop_content.php/coID/23/content/Bestellablauf')

[XT SQL Error]