1366 - Incorrect integer value: '' for column `dogsdream`.`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', '9acfac954e4e3d75a08c55a874fd6071', '18.117.152.251', '1714022373', '1714022373', '/shop/index.php/cat/c3_Vegetarisch.html')

[XT SQL Error]