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', 'aarnms6tqjun04e1eo80sb2tk1', '18.97.14.82', '1752187175', '1752187175', '/product_info.php?info=p72_802134-Obstpresse--Kartoffelpresse.html')

[XT SQL Error]