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', 'uc1c53g921ob1bu199i6fn3145', '3.137.180.196', '1746951429', '1746951429', '/product_info.php/info/p6328_KNS-Textschild--Notleiter.html')

[XT SQL Error]