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', 't25m8s6ln60qmd4hfsk0r1q0o2', '18.224.93.225', '1746787027', '1746787027', '/product_info.php?info=p56_800680-Mulde-fuer-Bauschubkarre.html')

[XT SQL Error]