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', 'a72e6172d1b2d169335291edbb8e3b6c', '216.73.216.71', '1794348327', '1794348327', '/')

[XT SQL Error]