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', 'kn99r6g3lsbo1gpeblpuuqejs7', '216.73.216.3', '1762255179', '1762255179', '/product_info.php/info/p6300_BGV-A8--Verhalten-im-Brandfall.html')

[XT SQL Error]