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', 'f2556a23aca41a499601eb172a976e58', '3.144.244.44', '1715397497', '1715397497', '/product_info.php/language/de/info/p1753_Ist-Faeroeer--5-Satellitenbild.html')

[XT SQL Error]