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', '2qfvu97k17hus775ah6irukba6', '18.226.251.22', '1713617679', '1713617679', '/login.php?XTCsid=2qfvu97k17hus775ah6irukba6')

[XT SQL Error]