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', '98229d94af5b383a7e19e839c3035c74', '3.17.128.129', '1713948402', '1713948402', '/product_info.php?info=p255_Andr--Carol---Silhouetten.html&XTCsid=9ed062a1d997e94e67f071e9bc3ac71b')

[XT SQL Error]