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', '7mluo2fiev8uge9frf75imvta7', '3.148.212.53', '1746960158', '1746960158', '/shop_content.php/coID/9')

[XT SQL Error]