1366 - Incorrect integer value: '' for column `shop_db3`.`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', '6b37799501c6526bd1dbf73cc19005f2', '3.129.247.196', '1713244334', '1713244334', '/checkout_shipping.php?XTCsid=90527aa2d529d2491dd707c19574b114')

[XT SQL Error]