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', '0d7kusaqn115h8l3rbgrm31jc6', '18.191.171.20', '1713573426', '1713573426', '/login.php?XTCsid=0d7kusaqn115h8l3rbgrm31jc6')

[XT SQL Error]