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', '09f621550d0f7490c53547b18ef53c75', '3.149.234.141', '1714141005', '1714141005', '/product_info.php/info/p3576_Guam-Reliefkarte.html')

[XT SQL Error]