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', '7409f8d3235f5b7db2e1c6de152bc08d', '44.220.89.57', '1711714776', '1711714776', '/shop_content.php?coID=4&XTCsid=752467afa49d1c2decc281986e95df51')

[XT SQL Error]