1366 - Incorrect integer value: '' for column `hbl_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', '04j5kla6uqhn0hsmdq5l3vfrr3', '216.73.216.217', '1751516823', '1751516823', '/login.php')

[XT SQL Error]