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', '122004d00635a8ee33513c2fb0121df7', '3.145.15.1', '1714598934', '1714598934', '/shop_content.php?coID=7')

[XT SQL Error]