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', 'g4n3mbkg17qii9hs0qmphl0nq4', '3.143.209.210', '1746780684', '1746780684', '/product_info.php?info=p43_801953-Brutautomat-Typ-1.html')

[XT SQL Error]