1366 - Incorrect integer value: '' for column `CP_as15`.`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', 'baopsbbb5j1abd91v82omk4645', '18.220.121.42', '1738994248', '1738994248', '/index.php?XTCsid=qg0uqqo4jksa5ns63d51ihq545&cat=c1301_Li-Polymer-Akkus.html')

[XT SQL Error]