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', 'o61d56mcmg8e0u6hd0g9thlaf0', '216.73.216.80', '1767173932', '1767173932', '/product_info.php/info/p6669_PB6LJ--ABC-Pulver--10-Loescheinheiten.html')

[XT SQL Error]