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', 'df38b0c53a08fd42e2ec14e8731f4c5f', '3.141.41.187', '1713535016', '1713535016', '/shop_content.php?coID=9&XTCsid=8431cc383ca4da55e69d814d1f9a8725')

[XT SQL Error]