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', '2b4adf642f8dc7fdd79840aeb3613d2c', '3.144.127.232', '1714195160', '1714195160', '/product_info.php?info=p205_Brass-Mysteries.html&XTCsid=752467afa49d1c2decc281986e95df51')

[XT SQL Error]