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', '15332f36032daa6a1d8849220dfa8bce', '18.217.208.72', '1713492651', '1713492651', '/checkout_shipping.php?XTCsid=752467afa49d1c2decc281986e95df51')

[XT SQL Error]