1366 - Incorrect integer value: '' for column `hbl_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', 'u90r81259d4q8tmhmpuaprtjk2', '18.219.66.32', '1746780013', '1746780013', '/product_info.php?info=p48_802332-Kueken-Futtertrog-50-cm.html')

[XT SQL Error]