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', 'a241185b6789a92d020d2371f5a7347f', '35.170.54.171', '1711700093', '1711700093', '/product_info.php?language=en&info=p247_Nessun-Dorma.html&XTCsid=7541ba64dfef2679c790315e735061c1')

[XT SQL Error]