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', 'b0bafe3ee839e4cb8e390830fc9f1f67', '44.205.3.18', '1711708616', '1711708616', '/shop_content.php/language/en/coID/7/content/Kontakt')

[XT SQL Error]