1366 - Incorrect integer value: '' for column `abtecsho_shop`.`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', '8djl2rmk317184so2iipkomvq0', '216.73.216.60', '1762537629', '1762537629', '/index.php/cat/c5199_Alkohole.html')

[XT SQL Error]