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', '397e9ebc3a59a432886d3b6489f5cc6d', '216.73.216.121', '1751589025', '1751589025', '/product_info.php/language/de/info/p4017_Reliefkarten-Poster-Konfigurator.html')

[XT SQL Error]