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', '4f2ef8f1cc2ce1198d4c2c29cb18eff8', '3.141.35.60', '1713917899', '1713917899', '/product_info.php/language/en/info/p3992_Afrika-Reliefkarte.html')

[XT SQL Error]