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', 'ak1oarhaavuq1slnq2nb2ihrq7', '107.23.85.179', '1710823650', '1710823650', '/login.php?XTCsid=ak1oarhaavuq1slnq2nb2ihrq7')

[XT SQL Error]