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', 'a06127ef4c863c36eea1fe1335433a76', '18.221.208.183', '1713583787', '1713583787', '/product_info.php/language/de/info/p2639_Italy-Relief-Map.html')

[XT SQL Error]