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', '75ddmkofqve1j4jboncjtg5d62', '44.201.24.171', '1711638841', '1711638841', '/login.php?XTCsid=75ddmkofqve1j4jboncjtg5d62')

[XT SQL Error]