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', 'faed8ad642f675b48edfa4801c9808f3', '3.131.13.194', '1714153620', '1714153620', '/product_info.php?info=p245_Drunt-am-Bergsee.html&XTCsid=244b07160d2ebeb432977424993b1b59')

[XT SQL Error]