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', 'rhgeopag2cogkoc0nku9hrhec1', '34.204.0.181', '1558821805', '1558821805', '/shop/')

[XT SQL Error]