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', 'd8e11bf1c356fc8e94c1d16b3d4d5861', '52.90.121.17', '1711723195', '1711723195', '/product_info.php?info=p302_Frecher-Lauser.html&XTCsid=638bbe3e68bb73ad3db5aa2ad24a3591')

[XT SQL Error]