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', 's00i7b593rqef6gc10p5kma0b7', '18.224.33.135', '1747132748', '1747132748', '/index.php?cat=c6_Haus--Hof-und-Garten.html&page=2')

[XT SQL Error]