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', '225p91mujoe5otl1f5ickungn5', '44.199.225.221', '1711696052', '1711696052', '/login.php?XTCsid=225p91mujoe5otl1f5ickungn5')

[XT SQL Error]