1366 - Incorrect integer value: '' for column `dogsdream`.`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', '6711e2f4c30d4821e3e0fd8030534271', '18.191.147.190', '1714114190', '1714114190', '/shop/index.php')

[XT SQL Error]