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', 'ea8551c27eb84a19f48a07f6ea41e72e', '3.236.27.143', '1685264867', '1685264867', '/index.php?refID=1')

[XT SQL Error]