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', 'e06108e7f07834f08b3083acaf232dc1', '44.204.164.147', '1710828100', '1710828100', '/shop_content.php?coID=8')

[XT SQL Error]