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', '5f7fb618494f38712cc2c165e7c834b6', '216.73.216.28', '1763615681', '1763615681', '/product_info.php?info=p2865_Saudi-Arabien-Reliefkarte.html')

[XT SQL Error]