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', 'mqlgod52u3fndo35pur9d6vkv6', '52.14.133.33', '1746773947', '1746773947', '/product_info.php?info=p619_Ofenrohrhaube-130-mm.html')

[XT SQL Error]