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', 'f2fb13a9dcbdbc6de3227750f20fdf24', '52.91.67.23', '1711633625', '1711633625', '/product_info.php/language/en/info/p2836_Guam-Reliefkarte.html')

[XT SQL Error]