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', '80r3jppv80r0b8g5p81i9r3d76', '44.197.114.92', '1711663560', '1711663560', '/login.php?XTCsid=80r3jppv80r0b8g5p81i9r3d76')

[XT SQL Error]