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', '3olntfdfr5esi2qb4579d57790', '3.144.26.253', '1718729089', '1718729089', '/index.php/manu/m3_RS-Namibia.html/manufacturers_id/admin/images/icons/admin/images/icons/images/product_images/thumbnail_images')

[XT SQL Error]