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', 'hu9n5t2l5jrcjdc1tfb2aootn1', '18.221.53.201', '1718732473', '1718732473', '/index.php/manu/m3_RS-Namibia.html/manufacturers_id/images/product_images/thumbnail_images/templates/xtc5/img/images')

[XT SQL Error]