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', '660eccf615078dbeae9ce00ccbd1f3e4', '3.147.89.85', '1713509915', '1713509915', '/popup_content.php?coID=1&XTCsid=fbf10991e93a5b1cee6d3cdc21485899')

[XT SQL Error]