1366 - Incorrect integer value: '' for column `ngtkeZ_web1104_2`.`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', '6bbps547eb973rf8dr6u3bola4', '216.73.216.61', '1761924677', '1761924677', '/shopping_cart.php')

[XT SQL Error]