1366 - Incorrect integer value: '' for column `pella-ware`.`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', 'c1soi79hmc52kgflgihodj3b51', '3.14.141.228', '1713550583', '1713550583', '/login.php?XTCsid=c1soi79hmc52kgflgihodj3b51')

[XT SQL Error]