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', '7bff1v9oifahtm2hquechhjp66', '18.224.20.254', '1747134738', '1747134738', '/product_info.php?info=p650_802530-Edelstahlkanne-3-5-Liter.html')

[XT SQL Error]