1366 - Incorrect integer value: '' for column `hbl_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', 'ldeq6g840qsr51pf30j7n7i2r4', '216.73.216.30', '1751837328', '1751837328', '/product_info.php?info=p493_800093-Futterdaempfer-160-Liter-vollverzinkt--schwere-Ausf-.html')

[XT SQL Error]