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', 'ot723s939cmmj1nv2f1h87ahe2', '54.174.85.205', '1711696560', '1711696560', '/login.php?XTCsid=ot723s939cmmj1nv2f1h87ahe2')

[XT SQL Error]