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', '0db3969573bf9a4a466129fe0626d00b', '3.20.238.187', '1714184743', '1714184743', '/product_info.php/language/de/info/p3564_Faroe-Is--3-Relief-Map.html')

[XT SQL Error]