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', 'c185c7b2a4e7cd84bf913aea15d1ab62', '3.137.183.14', '1714037964', '1714037964', '/index.php/language/de/cat/c30_Countries.html/page/3')

[XT SQL Error]