1366 - Incorrect integer value: '' for column `abtecsho_shop`.`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', '9dav9cf2kevl03cn6katkqcte5', '3.140.196.3', '1746784780', '1746784780', '/index.php/manufacturers_id/19')

[XT SQL Error]