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', '135at6dth4e41b6pu9chn4f9a1', '3.143.116.179', '1746933480', '1746933480', '/product_info.php?info=p33_Tisch-Ruebenmuehle.html')

[XT SQL Error]