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', '16539db18da72df369f99f414afa2c52', '18.190.153.51', '1713460864', '1713460864', '/product_info.php?info=p248_Memory-Of-Spain.html&XTCsid=26fedc8b3cbf5330d12a051fef4e732f')

[XT SQL Error]