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', '3c54066390991d21dc7f77232b12c5d9', '216.73.216.145', '1760525971', '1760525971', '/shop_content.php/language/en/coID/25/content/Rueckgaberecht')

[XT SQL Error]