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', 'cevdf6es35mg4g4o53svndl355', '34.204.52.16', '1711642779', '1711642779', '/login.php?XTCsid=cevdf6es35mg4g4o53svndl355')

[XT SQL Error]