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', 'vua1hsudgc1hk4dv5jfsb27q52', '216.73.216.6', '1752389074', '1752389074', '/product_info.php/info/p5784_Troll-2-S-Pulverloescher.html')

[XT SQL Error]