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', 'e71c11e5c68c75f2c1da3d200a23e6af', '3.137.170.183', '1714041585', '1714041585', '/index.php/language/de/cat/c7_3D-Druck.html')

[XT SQL Error]