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', '2stl1qouodj6qmg2ql7l6ndql3', '216.73.216.127', '1749608075', '1749608075', '/product_info.php?info=p545_K296100-Kalk----Universalspritze-verzinkt.html')

[XT SQL Error]