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', 'df66c1f68007445859545f351b71f940', '18.204.56.185', '1659979948', '1659979948', '/index.php/cat/c8_Relief-Map-Poster.html')

[XT SQL Error]