1366 - Incorrect integer value: '' for column `shop_db3`.`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', '616d8f0ff816b6adc9741b89794d903d', '3.145.178.240', '1713524823', '1713524823', '/checkout_shipping.php?XTCsid=12ab6c593489deceb1c19806497af77d')

[XT SQL Error]