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', '2db5dfc1d52d0df5d344724166456315', '3.94.99.173', '1711689784', '1711689784', '/index.php/language/en/cat/c30_Laender.html/page/4')

[XT SQL Error]