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', 'ksudlfv9v15t7ldvsge12tmjl3', '18.97.9.170', '1742531756', '1742531756', '/product_info.php?info=p30_800420-Knochenmuehle.html')

[XT SQL Error]