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', 'b4d09e8720ef9bc91b3f1e458adc299e', '18.226.169.94', '1714061963', '1714061963', '/product_info.php/info/p3998_Afrika-Reliefkarte.html')

[XT SQL Error]