1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', '6cba1bcd4e0227947fa4ba6f4e2cc5cc', '44.220.245.254', '1710828366', '1710828366', '/checkout_shipping.php')

[XT SQL Error]