1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', 'e49ce9c91410c413a757c910ccbe1481', '216.73.216.159', '1772312139', '1772312139', '/')

[XT SQL Error]