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', 'g4f38khutpd5c7r2g51t1e4010', '18.219.185.67', '1718728684', '1718728684', '/product_info.php?info=p32708_++%28%29+++6++Keystone.html')

[XT SQL Error]