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', 'uadtgrv3140a2skb6hvqenq483', '18.218.145.54', '1746949124', '1746949124', '/product_info.php/info/p6524_KNS-Textschild--Notausgang-freihalten.html')

[XT SQL Error]