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', '8b5a45a1fbf17116eca93e63c3419849', '216.73.216.147', '1785693408', '1785693408', '/')

[XT SQL Error]