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', '8a1e69e4516fa754b7cf7fc7f57e88b1', '35.175.172.94', '1711630889', '1711630889', '/index.php/cat/c30_Laender.html/page/9')

[XT SQL Error]