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', 's1r5phod5uo9c49ko2ln7a4it7', '52.55.214.236', '1711638844', '1711638844', '/login.php?XTCsid=s1r5phod5uo9c49ko2ln7a4it7')

[XT SQL Error]