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', '4e68a2fb6437914bd8d0c27640559517', '3.145.55.169', '1713254793', '1713254793', '/product_info.php?info=p298_Bei-uns-in-Bayern.html&XTCsid=7541ba64dfef2679c790315e735061c1')

[XT SQL Error]