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', '9cuo9pv1vc5j7snoi1vfd4uos0', '3.135.64.92', '1746958854', '1746958854', '/product_info.php/info/p5934_-Jockel-P-9-LJM--9-kg---Pulver-Dauerdruckl--scher.html')

[XT SQL Error]