1366 - Incorrect integer value: '' for column `pella-ware`.`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', '5eb49f5bef244958ead1936c6fc584c6', '18.117.196.217', '1714138395', '1714138395', '/shop_content.php?language=en&coID=4')

[XT SQL Error]