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', 'alllj5dr87gjc3b9dd14nf45l1', '18.189.195.48', '1746971585', '1746971585', '/product_info.php?info=p659_806507-Handbrause-u--Schlauch-fuer-Badeofenmischbatterie-drucklos.html')

[XT SQL Error]