1366 - Incorrect integer value: '' for column `pella-ware`.`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', 'b7fc7b64f6b48826d668e447740ab323', '216.73.217.69', '1793000164', '1793000164', '/')

[XT SQL Error]