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', 'df9d5e9a7a8f837878f721a3eed6ab14', '18.204.56.185', '1659978869', '1659978869', '/shop_content.php/coID/3/content/Unsere-AGB-s')

[XT SQL Error]