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', 'fff1a8fc6cdde242f9bfdfe20aa1e917', '3.135.217.228', '1714147043', '1714147043', '/product_info.php/language/en/info/p3986_Afrika-Reliefkarte.html')

[XT SQL Error]