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', 'ca46a95195150120eb14e35b6495e0e9', '216.73.216.51', '1794065942', '1794065942', '/')

[XT SQL Error]