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', '54bda5j0r76b10sv18tkd5b2t1', '3.142.53.191', '1746996539', '1746996539', '/product_info.php?info=p642_800079-Schlammsieb-fuer-100-Liter-Futterdaempfer.html')

[XT SQL Error]