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', 'bs9sa28mr87lj4d9dm9g06qa86', '3.145.115.135', '1746783819', '1746783819', '/product_info.php?info=p562_805784-Ersatzmesser-fuer-Schrotmuehle-AMA50--804503-.html')

[XT SQL Error]