1366 - Incorrect integer value: '' for column `abtecsho_shop`.`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', '4tus78fvuk9vobakmh41pm9r25', '216.73.216.127', '1761471723', '1761471723', '/product_info.php/info/p6330_KNS-Textschild--Notausstieg.html')

[XT SQL Error]