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', '7dc794c2a5d8d8198f4b64cd68f87982', '18.220.126.5', '1713566437', '1713566437', '/account.php?language=en')

[XT SQL Error]