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', '702b4d1b610677e7dcbdc88fd7974174', '18.222.119.148', '1713527831', '1713527831', '/index.php/language/de/cat/c30_Countries.html/page/5')

[XT SQL Error]