1366 - Incorrect integer value: '' for column `artcom-ug`.`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', 'gsn8n1mlm19mkpjosig5esllh5', '3.145.44.118', '1718731348', '1718731348', '/product_info.php?info=p18827_Sennheiser+HD-418.html')

[XT SQL Error]