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', '1fs9t40oqkp4e25r8d34sgmha1', '18.119.108.33', '1718733032', '1718733032', '/index.php/cat/templates/xtc5/stylesheet.css')

[XT SQL Error]