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', '9723a458d6825a341db2f4c36a2165b0', '216.73.216.149', '1767706363', '1767706363', '/product_info.php?info=p2877_Ukraine-Reliefkarte.html')

[XT SQL Error]