1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', '5a30925f5f23d60deeb91c4169e32d9d', '216.73.216.20', '1771725302', '1771725302', '/product_info.php?info=p2973_Philippinen-2-Reliefkarte.html')

[XT SQL Error]