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', 'f55bb9725a207d0e2b0240d920fb63dc', '18.216.94.152', '1714136923', '1714136923', '/index.php')

[XT SQL Error]