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', '5e93ccd5e83ea15ed62e5cfab91bc220', '216.73.216.3', '1767297253', '1767297253', '/product_info.php?info=p3431_Tunesien-Reliefkarte.html')

[XT SQL Error]