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', 'd315310b32415534c62fa084d3485ad3', '18.97.9.171', '1745234768', '1745234768', '/index.php?refID=1')

[XT SQL Error]