1366 - Incorrect integer value: '' for column `argus_xtc`.`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', '1tibfi378ofcr8du43gcgha3e7', '3.227.2.109', '1571506048', '1571506048', '/shop/index.php?cat=c16')

[XT SQL Error]