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', '0nulk9rf1r6o6am6gj9hul8f37', '3.147.66.28', '1718725861', '1718725861', '/index.php/manu/m3_RS-Namibia.html/manufacturers_id/templates/xtc5/images/product_images/thumbnail_images/images/product_images/thumbnail_images/654_0.JPG')

[XT SQL Error]