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', 'a27c22d917459fd79aad02c2662732c9', '3.15.219.217', '1713568334', '1713568334', '/shop_content.php?coID=1&XTCsid=937b7cb67e424972a37875d7d9fe8a0c')

[XT SQL Error]