1366 - Incorrect integer value: '' for column `abtecsho_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', 'm9tqsfeg461o5t8a3b7hh3ov67', '18.223.162.48', '1746957801', '1746957801', '/product_info.php/info/p5936_-Jockel-PS-1-JM--1-kg---Pulver-Dauerdruckl--scher.html')

[XT SQL Error]