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', 'q4tuji9gt30i6f9hlcl4l0q4n7', '54.242.165.255', '1711707141', '1711707141', '/login.php?XTCsid=q4tuji9gt30i6f9hlcl4l0q4n7')

[XT SQL Error]