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', 'b9a34e6f45bb21c5e0d7aae342ed72b9', '216.73.216.192', '1786546908', '1786546908', '/')

[XT SQL Error]