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', 'e997mu5f4stc38hfun43720q95', '54.221.159.188', '1710839267', '1710839267', '/advanced_search.php')

[XT SQL Error]