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', 'f8d5da0fb1fd629cffaaf2a1d545ba90', '18.222.67.251', '1714125118', '1714125118', '/checkout_shipping.php?XTCsid=937b7cb67e424972a37875d7d9fe8a0c')

[XT SQL Error]