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', 'k9n3ind956l082o6ago1elpdc2', '3.236.221.156', '1656576999', '1656576999', '/product_info.php/info/p141_.html')

[XT SQL Error]