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', 'd1d1c215e514da0bd6aaffb507c64537', '3.15.202.4', '1714068154', '1714068154', '/shopping_cart.php?XTCsid=f716959fd807bba9b6e004501137d276')

[XT SQL Error]