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', '03b8da094973fa5ff68c7ce03aa37981', '3.142.174.55', '1713594513', '1713594513', '/product_info.php?info=p245_Drunt-am-Bergsee.html&XTCsid=a33edcfe7a4d0f8d478a4ad1978f2859')

[XT SQL Error]