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', '788793871b706a0725bf0d2ec80af326', '3.139.104.214', '1714192532', '1714192532', '/product_info.php/info/p3305_Ist-Faeroeer--2-Reliefkarte.html')

[XT SQL Error]