1366 - Incorrect integer value: '' for column `pella-ware`.`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', 'o616trkvn7g01aq1sto3iv18v5', '18.212.102.174', '1711653081', '1711653081', '/login.php?XTCsid=o616trkvn7g01aq1sto3iv18v5')

[XT SQL Error]