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', '7n1ep6a3i5n2v8bh3f7bsn6so4', '18.97.9.171', '1747710429', '1747710429', '/index.php?cat=c61_Schaedlingsbekaempfung.html')

[XT SQL Error]