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', '7fa249b56ac7ab2bbc7c98e0f40785c3', '3.215.79.206', '1711697386', '1711697386', '/shopping_cart.php?XTCsid=cb0ad84d7acc90898c9ea3492fbc1557')

[XT SQL Error]