1366 - Incorrect integer value: '' for column `db162720`.`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', '15o4lnp8nk6arm3si7rsg92gv2', '3.236.214.123', '1711644200', '1711644200', '/shop_content.php/coID/4')

[XT SQL Error]