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', 'e83d288e4f3e8f74862016e24cc6d4c5', '18.188.168.28', '1714119971', '1714119971', '/shop_content.php/language/de/coID/4')

[XT SQL Error]