1366 - Incorrect integer value: '' for column `usr_web74_1`.`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', '92i7ol4lbnv1rj2s9ue0vfhs82', '216.73.216.41', '1762178806', '1762178806', '/product_info.php?info=p1826_Einkaufskorb-rund-XL.html')

[XT SQL Error]