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', 'lggmnikhfg74ab2hj5juaqptt6', '3.236.240.48', '1711701355', '1711701355', '/login.php?XTCsid=lggmnikhfg74ab2hj5juaqptt6')

[XT SQL Error]