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', '9238553fe4ff7a84a1ab47fa1954dd9e', '18.204.56.185', '1659973334', '1659973334', '/shop_content.php/coID/1/content/Shipping---Returns')

[XT SQL Error]