1366 - Incorrect integer value: '' for column `abtecsho_shop`.`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', 'i883edp916g02dedl5d6iko907', '3.145.188.159', '1746952414', '1746952414', '/product_info.php/info/p6302_KNS-Textschild--Aufzug-im-Brandfall-nicht-benutzen.html')

[XT SQL Error]