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', '9gbu0v83130t3lggd38s1i18r4', '3.235.199.19', '1710846436', '1710846436', '/index.php/cat/c8_.html')

[XT SQL Error]