1366 - Incorrect integer value: '' for column `shop_db3`.`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', 'f21c6bedbdcb0febd56141840a1f3cb0', '44.221.87.114', '1711713367', '1711713367', '/shop_content.php?coID=3&XTCsid=0b5950426fd4d33665c5302b513a92c8')

[XT SQL Error]