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', 'e20a5cddda5db874b2b32d41b8fb7997', '3.15.190.144', '1713601159', '1713601159', '/product_info.php?language=en&info=p246_Dream-Melody.html&XTCsid=3a57a77cceb215ec6cb91829f992c301')

[XT SQL Error]