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', 'k48oc6jfvtoono2n0odd0k3gq3', '3.133.145.211', '1746956557', '1746956557', '/product_info.php/info/p6071_-Jockel-KS-10-J--10-kg---Kohlendioxidl--scher.html')

[XT SQL Error]