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', '7lhm3q3i16u9u6t37q9f25s3h1', '216.73.216.6', '1752295242', '1752295242', '/product_info.php/info/p6300_BGV-A8--Verhalten-im-Brandfall.html')

[XT SQL Error]