1366 - Incorrect integer value: '' for column `creatihu_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', 'f26fdb06426f9bc2e4a3e79c180745d7', '18.118.140.108', '1713459384', '1713459384', '/product_info.php?info=p319_.html')

[XT SQL Error]