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', '5a5ff318948a26f2ccd4038257710543', '18.97.9.169', '1765537943', '1765537943', '/')

[XT SQL Error]