1366 - Incorrect integer value: '' for column `magickland`.`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', '4r4rgmmptmavd1445bqjoj6jv3', '3.145.108.128', '1718707692', '1718707692', '/index.php/cat/images/product_images/thumbnail_images/templates/xtc5/img/templates/xtc5/img')

[XT SQL Error]