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', '10e8bb36c105afde4a1dd8b6b41ca1ec', '18.97.14.80', '1771246303', '1771246303', '/')

[XT SQL Error]