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', '12dnrrrula7d511kfop5ftc4b0', '18.218.186.133', '1718725558', '1718725558', '/index.php/cat/templates/xtc5/admin/images/product_images/thumbnail_images/1357_0.JPG')

[XT SQL Error]