1366 - Incorrect integer value: '' for column `ngtkeZ_web1104_2`.`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', '88ifg7ijj04lv1hg8skd3ppgg1', '100.25.42.117', '1618890430', '1618890430', '/')

[XT SQL Error]