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', 'qcd7lsno53gju4npv1sm1mtpo7', '18.218.184.214', '1713514278', '1713514278', '/login.php?XTCsid=qcd7lsno53gju4npv1sm1mtpo7')

[XT SQL Error]