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', '70fa0104c0f41e1486c655879d95445a', '216.73.216.116', '1752389743', '1752389743', '/shop_content.php/language/de/coID/1/content/Liefer--und-Versandkosten')

[XT SQL Error]