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', '7puv18qul78rk1eekbt1ic83s2', '3.145.108.128', '1718732319', '1718732319', '/index.php/cat/templates/xtc5/stylesheet.css/admin/images/icons/templates')

[XT SQL Error]